Fit
“Will it fit me?”
Every dress has the designer's own size chart and a fit guide on 4 body sizes. Between sizes? Size up.
Mac Duggal 50677 Satin Mermaid Gown
Buy now, pay later.
Buy now, pay later
Choose your plan at checkout. Available in Canada and the USA.
Sezzle
Split it into interest-free payments
Pay the first payment today, the rest every two weeks. No interest.
Affirm
Monthly payments
Spread the cost over monthly instalments. Rates and terms depend on eligibility.
Select Sezzle or Affirm as your payment method at checkout.
Sold out in your size? Tap the crossed-out size to get notified.
We can usually order it from Mac Duggal for you. Message us and a stylist will send you the date.
Or message a stylist:
Standard: arrives in 7 to 12 days
Express: arrives in 4 to 6 days
Talk to a stylist
Real stylists answer your questions on fit, sizing and delivery.
Text us at 416-536-2956
Replies in about 10 minutes. Prefer email? hello@marlasfashions.com
Why shop at Marla's
What makes us different
4 worries we solve for every customer
Real stylists
“Who can I ask?”
Text or WhatsApp a real stylist 7 days a week. Replies in about 10 minutes.
Price match + $10 off
“Can I find it cheaper?”
Found it for less on a Canadian or US website? We'll match the price and take another $10 off, as long as your colour and size are available.
Shipping
“Will it arrive in time?”
Ships from LA, Chicago, New York & Toronto in our pink Marla's box. No duties. Free over $250. Standard 6–9 business days.
Not ready yet? Tap ♡ to save it to your wishlist. It's there whenever you're ready.
Style it with
Stick-on bra
Invisible support for strapless & backless
$20 CAD
Choose your cup size
Double-sided tape
Keeps necklines in place all night
$20 CAD
Choose your cup size
Garment bag
Our signature pink bag. Arrives clean and protected
$10 CAD
Choose your cup size
Description
About the Dress: Mac Duggal 50677
Mac Duggal 50677 is a long, structured satin mermaid gown built around two standout details: dramatic off-shoulder puff sleeves at elbow length and a fully open back that runs from the neckline to the waist. The sweetheart neckline sits at the front while the back drops completely open, creating a bold contrast of structure and exposure. This is a serious formal gown designed for events where presence matters — prom, galas, black-tie evenings, and formal dances.
Fit & Silhouette
Mac Duggal 50677 follows a true mermaid silhouette: the gown is fitted tightly through the bust, waist, and hips, then flares out below the knee into a dramatic sweep with a train. The princess-seam bodice is boned, which means it holds its shape and supports you without needing a separate bra. The fit through the body is close and structured — this gown is designed to contour. The puff sleeves sit off the shoulder at elbow length, adding volume at the top without restricting arm movement. Because this is a mermaid cut with a train, walking and dancing require short, fluid steps rather than wide strides, and the skirt moves beautifully when you do.
Fabric & Detail
The fabric is a structured satin — think mikado or faille-weight satin — which has a smooth, high-sheen surface with enough body to hold the dramatic puff sleeve shape without collapsing. There is no beading, sequins, or surface embellishment. The dress relies entirely on its construction and silhouette for its impact. The boning runs through the bodice via princess seams visible in the detail shots, and the open back is clean and uninterrupted — no lace-up, no corset closure, just a bare back from shoulder to waist.
Key Features
- Structured satin fabric with smooth, high-sheen finish
- Sweetheart neckline with off-shoulder puff sleeves at elbow length
- Fully open back from neckline to waist
- Boned princess-seam bodice for built-in support
- True mermaid silhouette fitted through hips, flaring below the knee
- Floor-length with a trailing sweep
- No surface embellishment — silhouette and structure do the work
- Available in Purple, Black, Fuchsia, and Royal Blue
Style & Occasion
Mac Duggal 50677 is at home at prom, formal galas, black-tie events, and upscale evening functions. The open back makes it bold enough to stand out in a ballroom, while the structured satin and boned bodice keep it polished and elegant rather than party-casual. The open back suits evening and black-tie receptions beautifully; for more conservative wedding-guest settings, a wrap or tailored shawl pairs well with the look.
In terms of color: Purple photographs as a rich, saturated jewel tone. Royal Blue is vivid and electric. Fuchsia is a bright, warm pink that reads strongly under event lighting. Black is sharp and classic. All four colors hold their depth well under ballroom and stage lighting. If you want maximum drama under spotlights, Royal Blue and Fuchsia are the boldest reads; Purple and Black lean more refined.
For shoes, a pointed-toe or strappy heeled sandal in a matching or metallic tone works best — the train means you will want a heel that does not catch fabric. Keep jewelry minimal: the open back and puff sleeves already command attention. A simple pendant or small earrings let the dress speak. Marlas Fashions is an authorized Mac Duggal retailer, and every dress is inspected before it ships.
Size & fit
- Fitted (mermaid). Bust, waist and hips all matter. Go by your largest measurement.
- Length: Long
- Neckline: Off-Shoulder
- Details: Open Back, Train
- Between sizes? Text a stylist and we'll help you choose.
Shipping
- Arrives in 7–12 business days, or 4–6 with Express (+$35).
- Free shipping over $250 to Canada and the USA.
- Text updates as your order ships.
Full shipping details
Your Dress — Delivered in Days, Not Weeks.
We know timing matters — especially for prom, weddings, quinceañeras, and special events.
- Receive your dress within 7–12 business days, depending on designer availability.
- You’ll receive text updates as your order moves from processing to shipping.
- Once shipped, delivery typically takes 2–5 business days within North America.
Need it sooner?
We offer rush options where you can receive your dress within 4–6 business days. Text us at +1 416-536-2956 before ordering and we’ll confirm the fastest possible delivery date.
We are an authorized retailer of top designers, which means your dress ships brand new and directly from the designer or our showroom — never used, never rented.
Have an event date? Add it in your order notes so we can prioritize accordingly.
We proudly ship across Canada, the United States, and Internationally, with in-store pickup available at our Toronto showroom.
Returns
- Tell us within 5 days of delivery.
- 100% store credit, a one-time exchange, or a refund (30% restocking fee).
- Online purchases only; in-store purchases are final.
Full return policy
WE ACCEPT RETURNS!
For Online Purchases Only. All in-store purchases are FINAL.
We hope you LOVE your dress — but if you're not completely satisfied with your online purchase, you may request:
- 100% Store Credit (no expiration).
- A one-time exchange, OR
- A return with a 30% restocking fee, OR
You must notify us of a return within 5 days of delivery (including weekends and holidays — we are open 7 days a week).
We have no control and accept no responsibility for the sizing selected. Please carefully review the size chart before ordering. If you need assistance with sizing, we’re happy to help — text us at +1 416-536-2956.
ORDER CHANGES & CANCELLATIONS
Once your order is placed, you have 5 hours to request a change to the color, size, or style.
If an item becomes unavailable, we will offer alternatives or provide the option of a full refund for that item.
Please see our Returns & Exchanges page for full details.
-
Free standard shipping on orders over $250 to the US and Canada. Under $250, shipping is shown at checkout.
Shipping details -
US orders ship from our warehouses in Los Angeles, Chicago and New York. Canadian orders ship from Toronto. No duties to pay at the door.
Shipping details -
Exchange, store credit or refund. Dresses tagged Final sale can't be returned.
Return policy -
Found this dress cheaper? Send us the link and we'll match the price.
Ask a stylist
Why buy from Marlas
Authorized retailerEvery dress authentic, direct from the designer
Toronto flagship10,000 sq ft showroom, 100,000+ clients styled
15,700+ online ordersShipped to 59 countries
Real stylistsText, WhatsApp or chat. Replies in about 10 min
Choose options
Mac Duggal 50677 Satin Mermaid Gown with Off-Shoulder Puff Sleeves
Sale price $580 CAD
Regular price$685 CAD
Need help?
Frequently Asked Questions
This is the most important question for a mermaid gown, so let's be direct about it. Mac Duggal 50677 is fitted tightly through the hips and flares below the knee — that flare is what determines how freely you can move. Once the skirt opens past your knees, there is enough room to take normal dance-floor steps and to move fluidly side to side. You won't be taking wide, striding steps, but you can absolutely sway, turn, and dance through a full event without feeling trapped.
The boned bodice actually helps here more than most people expect. Because the bodice holds its structure on its own, it stays exactly where it belongs regardless of how much you move. You don't have to keep adjusting or holding the top in place while you're on the dance floor. The sweetheart neckline with off-shoulder construction means your arms have full range of motion — the puff sleeves sit off the shoulder at the elbow, so they don't pull across the chest or restrict how you lift your arms.
The open back is worth mentioning in the context of movement too. Because there's no lace-up or corset closure pulling across the back, there's nothing to tighten or loosen as the night goes on. The structured satin fabric also has enough body weight that the skirt moves with a satisfying sweep when you walk and turn — it doesn't cling unexpectedly or tangle between your legs.
A few practical tips for wearing a mermaid gown all night: choose your shoes before the event and break them in slightly, because in a fitted skirt you compensate for small steps with your posture and footwork more than you would in a fuller skirt. A pointed-toe or strappy heel works better than a block heel because it gives you cleaner clearance above the train. Sit down early in the night to get a feel for how the skirt positions when seated — mermaid gowns sit slightly differently in a chair than A-line or ballgown styles, and knowing that in advance means you won't be surprised mid-event.
Overall: this gown is genuinely wearable for a full evening of dancing. The key is embracing the movement style it asks for — smooth, fluid, and a little more deliberate than a full skirt — rather than fighting it. Most wearers find that style feels natural within the first hour of the event.
Mac Duggal 50677 works genuinely well across all three of those settings, but it reads differently at each one, and understanding that helps you decide.
At prom, this gown makes a strong statement. The dramatic puff sleeves, open back, and mermaid silhouette are the kind of details that photograph beautifully under stage and ballroom lighting, and the bold color options — Purple, Royal Blue, Fuchsia, Black — give you real range depending on the look you want. The structured satin catches light cleanly without sequins, so it reads polished rather than flashy. If you want a gown that stands out on its own through silhouette rather than embellishment, this is a strong choice for prom.
At a gala or formal black-tie evening, the gown transitions well because the construction is genuinely elegant. The boned bodice, the clean unembellished satin, and the tailored mermaid fit all read as upscale formal wear rather than dancewear or party wear. The open back adds an element of drama that works at events where sophisticated, attention-getting style is appropriate. Black is the most obvious choice for a black-tie event, but deep Purple also works well in that context.
This gown suits a wide range of formal occasions, including prom, gala, and black-tie events. For wedding-guest wear, an open back that extends from the neckline to the waist is a detail worth considering carefully, as a more covered style is often the better fit for that setting. If you're attending a wedding as a guest and considering this gown, we'd recommend flagging it with us before ordering.
For formal evening events in general: this dress photographs exceptionally well under event lighting. Fuchsia and Royal Blue are the most vivid options under stage or ballroom lighting; Purple and Black photograph with more depth and less saturation. If you know your event is heavily photographed or lit for video, the brighter colorways will read more dramatically in the images.
One more consideration: this gown has a train and a true mermaid flare, which means it's designed for events where you'll be walking, standing, and dancing — not seated for long periods at a formal dinner. If your event is primarily a seated dinner followed by a brief reception, a less structured silhouette might be more comfortable for extended sitting. But for events where you're on your feet and moving through a venue, Mac Duggal 50677 is well-suited.
Color rendering on screens always varies, so here is what each colorway looks like in real-world conditions. Purple is a true jewel-toned violet — saturated and rich, not lavender and not blue-purple. It holds depth under warm ballroom lighting without going dark. Royal Blue is vivid and electric, closer to cobalt than navy — it pops strongly under stage and event lighting and photographs with high contrast. Fuchsia is a warm, bright magenta-pink that is more hot-pink than blush — it reads very boldly in a room and under flash photography. Black is exactly as expected: classic, sharp, and flattering under any lighting.
For choosing: if you want maximum visual impact in a large ballroom or under spotlights, Royal Blue and Fuchsia are the highest-contrast reads. Purple and Black are more refined and work well when you want the silhouette to be the focus rather than the color. All four colorways are photographed on the product page — position 1 shows Purple front, position 4 shows Black front, position 7 shows Fuchsia front, and position 9 shows Royal Blue front — so you can compare directly.
If you are still undecided between two colors, reach out to us before ordering and we can share any additional detail shots or lighting comparisons we have on file.
Structured satin gowns require dry cleaning — do not machine wash or hand wash this gown. The satin's surface can water-spot and the boned bodice construction is not designed for wet cleaning. After wearing, air it out on a padded hanger before putting it into a garment bag.
For storage, hang the gown on a wide, padded hanger to support the weight of the skirt. Store it in a breathable garment bag — not a plastic dry-cleaning bag — to prevent moisture buildup. Keep it away from direct sunlight, which can shift satin colors over time, especially in the lighter colorways.
For travel, the biggest concern with this gown is the puff sleeves — the voluminous construction can get crushed in a standard suitcase. The best approach is to use a large, rigid garment carrier and stuff the sleeves lightly with acid-free tissue to hold their shape during transit. If you are flying with it, carry it on if at all possible rather than checking it. When you arrive, hang it immediately and allow any minor creasing to relax overnight. A hand steamer on a low setting works for refreshing the satin if needed — always test a small hidden area first and keep the steamer moving rather than holding it in one spot.
The puff sleeves and open back together mean the dress is already doing a lot of visual work — your accessories should complement rather than compete. For shoes, a pointed-toe or strappy heeled sandal in a matching color or metallic (gold, silver, or rose gold) works best. Avoid chunky block heels, which can catch on the train. A heel in the three-to-four inch range gives you the right posture for the mermaid silhouette without being impractical for a full evening.
For jewelry, keep it simple. The open back is a feature, so a back-draping necklace or a delicate body chain can highlight it if you want to accessorize that area. At the front, the sweetheart neckline works well with small stud earrings or simple drop earrings — statement earrings can conflict with the volume of the puff sleeves. Avoid a large necklace or choker, which fights with the off-shoulder construction. A thin bracelet or ring is fine. If you choose Black, metallic accessories read clearly; for the colored versions, match-tone or champagne-gold accessories tend to be the most cohesive choice.
Standard shipping on Mac Duggal 50677 takes 7 to 12 business days from the time your order is confirmed. Marlas Fashions ships from warehouses in Los Angeles, New York, and — for Canadian orders — Toronto. US and Canadian customers pay no duties or import fees. International orders ship with full tracking to most destinations worldwide.
If you need the gown faster, rush processing is available — contact us directly to confirm availability and rush timelines for your specific date, since rush eligibility depends on current stock. We strongly recommend ordering with enough lead time for any alterations you may want after the gown arrives, as most formal gowns benefit from at least minor tailoring for the best fit. Every 50677 order is hand-inspected before shipping so the fit and finish arrive flawless. If you are between sizes on the 50677, send our team your measurements before ordering and we will advise. Popular colorways of the 50677 sell out quickly each season, so early orders get first pick. Call or text our Toronto boutique at 416-536-2956 and our stylists will help you find your perfect dress.
Marlas Fashions accepts returns and exchanges on eligible items. If the gown doesn't work for you, your options are: a full store credit that never expires, a direct exchange for a different size or colorway, or a refund less a 30% restocking fee. The store credit option is especially useful if you want to try a different size — it keeps the full purchase value available to you without the restocking deduction.
Because formal gowns can fit differently depending on individual measurements and alterations history, we recommend having your measurements taken professionally before ordering and comparing them against Mac Duggal's size chart. If you are between sizes in the bodice versus the hips — which is common with mermaid silhouettes — sizing to the larger measurement and having the bodice taken in by a seamstress is usually the better approach than sizing down and hoping the hips work out.
If you have specific fit questions before you order, reach out to us and we'll help you choose the right size.
Most long satin gowns at this price point use surface embellishment — beading, sequins, or appliqués — as their primary design statement. Mac Duggal 50677 takes the opposite approach: no embellishment at all, just structured construction and silhouette. The drama comes from the dramatic puff sleeves, the open back, and the precision of the mermaid fit. That makes it a more architectural gown than a decorative one.
The mikado-weight satin is also worth noting. It has enough body and structure to hold the puff sleeve shape without padding or internal support structures — that's a construction quality indicator. Many lower-cost satin gowns use lighter, drapier fabric that collapses the sleeve volume quickly. The boned princess-seam bodice similarly reflects deliberate construction rather than simple seaming.
If you are comparing this gown to something similar with sequins or heavy beading, the practical difference is versatility: Mac Duggal 50677 photographs with equal impact across all lighting environments, whereas heavily embellished gowns can look overwhelming in certain lighting and less impactful in others. The clean satin surface is consistent and reliable in photos.