







Portia and Scarlett XO313 Fitted Hot-Stone Sweetheart Gown
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We can usually order it from Portia and Scarlett for you. Message us and a stylist will send you the date.
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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
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: Portia and Scarlett XO313
The Portia and Scarlett XO313 is a long fitted gown built for maximum impact. It opens with a sweetheart neckline and a keyhole cut-out beneath the bust, framed by side cut-out panels in the bodice. Hot stones are scattered across the full length of the dress from top to hem, catching light with every move. A sweep train finishes the silhouette at the back.
Fit & Silhouette
The Portia and Scarlett XO313 is cut to follow the body closely through the bust, waist, and hips. The jersey base fabric has natural stretch, which allows the dress to move with you rather than against you. Ruching at the waist pulls the fabric in at the stomach and creates a smooth, flattering shape through the midsection. The high slit at the side gives room to walk and adds a dramatic leg-baring element. Thin spaghetti straps run from the sweetheart cups over the shoulders and cross into a crisscross lace-up back construction. The back is almost entirely open, with only the thin crossing straps across it, making this one of the most exposed-back styles in the Portia and Scarlett line.
Fabric & Detail
The base of the XO313 is a stretch jersey, which is one of the most forgiving fabrics for a body-conscious cut — it holds its shape, resists wrinkling, and travels well. The hot-stone surface treatment covers the dress from neckline to hem, with a denser concentration in the bodice and a lighter scatter down the skirt. This is a stone-set finish, not a glitter coating, so each stone sits flush with the fabric rather than sitting on top. The result is a subtle sparkle that reads as refined rather than flashy under stage or event lighting.
Key Features
- Sweetheart neckline with keyhole cut-out beneath the bust
- Side cut-out panels in the bodice
- All-over hot-stone embellishment from bodice to hem
- Ruching at the waist and stomach area
- Spaghetti straps feeding into a crisscross lace-up back
- Near-full open back from shoulders to low back
- High side slit for ease of movement
- Sweep train at the back hem
- Stretch jersey base for all-night comfort
Style & Occasion
The Portia and Scarlett XO313 is built for prom, pageants, formal galas, and evening events where a bold, body-forward look is the point. The combination of the sweetheart neckline, open back, and high slit positions this squarely in the category of statement formal wear — not understated, but not overdone either. The all-over hot stones keep the dress sparkling under any lighting without relying on loud print or color. It is available in Aqua, Black, Fuchsia, Lt. Blue, Periwinkle, Red, and Yellow. Lighter neutrals like Aqua, Lt. Blue, and Periwinkle will read softer and more ethereal under stage lighting. Red and Fuchsia are vivid and high-contrast. Black is the most versatile option for repeat wear after the primary event. Pair with strappy heeled sandals, minimal jewelry — the stones do the work — and a small clutch. An updo or sleek pulled-back style works best to show off the open back.
Size & fit
- Fitted. Bust, waist and hips all matter. Go by your largest measurement.
- 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.
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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.
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