Portia and Scarlett Portia & Scarlett XO359 Sequin

Portia and Scarlett XO359 Halter-Neck Sequin Fitted Long Gown with Sweep Train

$ 10,329

Size :

Color :

Burgundy

Size :

Color :

Burgundy

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Frequently Asked Questions

How fast does Portia and Scarlett XO359 ship, and where does it ship from?

Marlas Fashions ships the Portia and Scarlett XO359 from warehouses in Los Angeles and New York in the United States, and from a Toronto warehouse serving Canadian customers. Standard delivery takes 7 to 12 business days from the time your order is placed and confirmed. Rush shipping is available if you have a firm event date coming up — just reach out before placing your order and the team can advise on the fastest available option for your location. For US customers, there are no duties or import fees — your order ships domestically from one of the American warehouses. Canadian customers also pay no duties, since the Toronto warehouse ships within Canada. International customers receive fully tracked shipping to most countries worldwide, and the tracking information is sent as soon as your order is dispatched so you can follow it every step of the way. If you are ordering the XO359 for prom or a specific event, the general advice is to order as early as you can. For an event in a given month, try to place your order at least three to four weeks ahead to leave time for standard shipping plus any alterations you might need after the dress arrives. Gowns like this one — close-fitted, fully sequined, with a specific silhouette — often benefit from a hem or strap adjustment to get the length exactly right for your height and heel combination. Every XO359 order is hand-inspected before shipping so the fit and finish arrive flawless. If you are between sizes on the XO359, send our team your measurements before ordering and we will advise. Popular colorways of the XO359 sell out quickly each season, so early orders get first pick. Our stylists fit the XO359 in the boutique every week and know exactly how it runs. Every XO359 order is hand-inspected before shipping so the fit and finish arrive flawless.

Can I return the Portia and Scarlett XO359 if it doesn't fit when it arrives, or try it on at home first?

Yes — Marlas Fashions makes it straightforward to try the Portia and Scarlett XO359 at home and decide from there. Because the XO359 is a close-fitting gown, trying it on in your own space with your own shoes is genuinely useful before committing fully, and the return policy is set up to support that. If the dress is not right for you, you have three options. First, a full exchange — swap the XO359 for a different size, color, or style and Marlas will sort out the logistics. Second, store credit that never expires, which means you can apply it to any future purchase with no time pressure. Third, a refund to your original payment method, which is processed less a 30% restocking fee. The restocking fee exists because formal gowns are handled and inspected individually, but the store credit and exchange options avoid it entirely and are the routes most customers prefer. To be eligible for any return, the dress needs to be in its original, unworn condition — tags still attached, no signs of wear, no alterations made. Once a gown has been hemmed or taken in it cannot be returned, which is worth keeping in mind if you are tempted to rush to the tailor immediately after it arrives. Take it on, check the fit, check the length with your shoes, and then decide.

What makes the Portia and Scarlett XO359 different from other sequin prom gowns?

Most sequin prom gowns use sequin as a surface accent — on the bodice, on the skirt panels, or as a trim detail. The XO359 goes the other way: the sequin runs top to bottom without interruption, from the high halter neckline to the hem. That kind of complete sequin coverage creates a different visual effect entirely — the dress reads as one continuous surface rather than a decorated garment. The back is also unusual. A full open back from the halter strap down to the lower back is dramatic on its own, but the lace-up crisscross closure running through the centre adds a structural element that contrasts with the openness on either side. Most open-back gowns use a simple hook or zip — the visible lacing here is both functional and part of the design. Finally, the silhouette is specifically fitted rather than mermaid. The skirt widens gradually toward the floor rather than tucking in at the knee and flaring dramatically. That makes the XO359 easier to walk and move in compared to a true mermaid cut, while still delivering the long, sleek line that photographs well at prom. Call or text our Toronto boutique at 416-536-2956 and our stylists will help you find your perfect dress.

How does the back closure on the Portia and Scarlett XO359 work, and can I adjust it for fit?

The XO359 uses a lace-up crisscross closure at the centre of the open back. The lacing threads through a series of points running vertically down the centre back, and you tighten or loosen it to adjust how the bodice fits through the torso. This style of closure gives you more flexibility than a standard zip. If you are between sizes — say your bust measures to one size and your waist to another — the lace-up can often bridge that gap by tightening at one zone and leaving more room at another. It is not a substitute for proper sizing, but it does add roughly an inch or two of adjustability in either direction. The trade-off is that you will need someone to help you lace it up. This is not a dress you can get into alone. For prom specifically, that usually means getting ready with friends or asking a parent or partner to help before you leave. Allow five to ten extra minutes in your getting-ready timeline for the lacing. Once laced, the closure is secure. The dress will not loosen or shift through a full night of dancing as long as the bow at the top is tied firmly. If you plan to dance extensively, ask whoever is lacing you to tie it slightly tighter than comfortable at first — the sequin fabric has a small amount of give and the lacing will relax slightly as the evening goes on. Every XO359 order is hand-inspected before shipping so the fit and finish arrive flawless. If you are between sizes on the XO359, send our team your measurements before ordering and we will advise. Popular colorways of the XO359 sell out quickly each season, so early orders get first pick. Our stylists fit the XO359 in the boutique every week and know exactly how it runs. Every XO359 order is hand-inspected before shipping so the fit and finish arrive flawless.

Can a group of friends or a prom court all wear the Portia and Scarlett XO359 together?

Yes, and the XO359 actually works well for group coordination. The dress is available in both Burgundy and Pink, which gives a group two options: go matching in the same colour, or split the group across both shades for a coordinated-but-distinct look. Burgundy is a strong anchor colour for group events — it reads well in photos, holds up under indoor event lighting, and pairs cleanly with classic suit colours like black, navy, and charcoal. Pink provides contrast if you want some variety in a prom court lineup without the group looking disconnected. For damas or a coordinated court, the fully sequined surface of the XO359 means every person in the group will reflect light consistently — the look holds together even when shot from a distance. The halter neckline and fitted silhouette also create a uniform line across different body types, which is worth considering when dressing a group. If you are ordering multiple units for a group, contact Marlas before placing the orders. The team can confirm stock levels across sizes and colours simultaneously, which prevents a situation where one person in the group ends up in a different dress because her size sold out between individual orders.

How does sizing work for the Portia and Scarlett XO359 and does it run true to size?

The XO359 runs close to standard US sizing for most customers, but because it is a body-hugging fitted gown, accurate measurements matter more here than they would for an A-line or ballgown silhouette. The dress sits against the body from neckline to hem with very little room to spare, so a half-size difference can be noticeable. To measure: take your bust at the fullest point, your natural waist, and your hips at the widest point. Compare all three measurements to the Portia and Scarlett size chart, and if two measurements point to the same size, go with that size. If different measurements point to different sizes, size up to the larger one — the lace-up crisscross closure gives you some room to take in the fit at the back. Customers who are petite or taller than average should factor in the hem length. The XO359 is a floor-length gown cut for a standard height range. If you are significantly shorter or taller, plan for a hem alteration after the dress arrives — a good local tailor can adjust a sequin hem, though it takes more time and care than a plain fabric hem, so build that into your timeline before the event.

What events and occasions is the Portia and Scarlett XO359 best suited for?

The XO359 is built primarily for prom — the full sequin coverage, long fitted silhouette, and dramatic open back are a direct match for what prom calls for. It is also well suited to formal galas, evening events, and black-tie-adjacent occasions where a floor-length sequin gown is appropriate. As a wedding guest, this gown suits evening receptions and black-tie celebrations best, where its floor-length silhouette and open back are right at home. Similarly, military ball dress codes typically require a covered back, so the XO359 would not meet that standard. For black-tie events or formal galas, the XO359 works well. The Burgundy colorway in particular reads as classic formal. The Pink option is slightly less conventional for gala settings but works for events with a less rigid dress code. If you are looking at this dress for an event other than prom, the key questions are: is a floor-length sequin gown appropriate for the occasion, and is a fully open back within the dress code? If yes to both, the XO359 is a strong choice.

What undergarments work best with the Portia and Scarlett XO359?

The XO359 has a high halter neckline and a fully open back, which rules out most traditional bras. The dress does not have confirmed built-in boning, so the support comes primarily from the structure of the close-fitted sequin layer and the lace-up closure at the back. For bust support, adhesive bras or low-back bra solutions designed specifically for open-back gowns are the most practical options. Many wearers of open-back halter gowns at this length go without a bra entirely and rely on the fitted structure of the dress — whether that works depends on your body and comfort level. For the lower body, seamless shapewear that ends at mid-thigh is the best option if you want a smooth line under the fitted skirt. Avoid shapewear with visible edges at the thigh or hip, as these can create lines under the sequin fabric. Thong-cut underwear or seamless briefs work for most wearers. Stick with what you plan to wear to the event when you try the dress on at home after it arrives — shoes, shapewear, everything. That is the only reliable way to check that the silhouette looks right and that you are comfortable before your event.

Portia and Scarlett XO359 Halter-Neck Sequin Fitted Long Gown

About the Dress: Portia and Scarlett XO359

Fit & Silhouette

Fabric & Detail

Key Features

Style & Occasion

Your Dress — Delivered in Days, Not Weeks.

WE ACCEPT RETURNS!

ORDER CHANGES & CANCELLATIONS

Frequently Asked Questions

Price Match Guarantee

Easy
Returns

Worldwide
Shipping

Portia and Scarlett · XO359 Halter-Neck Sequin Fitted Long Gown

About the Dress: Portia and Scarlett XO359

Fit & Silhouette

Fabric & Detail

Key Features

Style & Occasion

Your Dress — Delivered in Days, Not Weeks.

WE ACCEPT RETURNS!

ORDER CHANGES & CANCELLATIONS

Frequently Asked Questions

Get on the list

Price Match Guarantee

Easy Returns

Worldwide Shipping

Portia and Scarlett XO359 Halter-Neck Sequin Fitted Long Gown

Easy
Returns

Worldwide
Shipping