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Sienna | Women’s Square-Neck Asymmetric-Waist High-Slit Fall Wedding Guest Maxi Dress

Regular price $112.00 $55.95 Sale price Save 50%
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The Sienna Women’s Square-Neck Asymmetric-Waist High-Slit Fall Wedding Guest Maxi Dress is your go-to choice for weddings, galas, and glamorous formal evenings. Cut with a structured, corset-style bodice, a clean square neckline framed by wide straps, and a richly pleated skirt that falls asymmetrically into a thigh-high side slit, this gown is perfect for women who want a sculpted, hourglass silhouette with dramatic movement built in.

Why You'll Love It

  • Sculpted Corset Waist: The structured, fitted bodice cinches the midsection for a naturally flattering hourglass shape without extra shapewear.
  • Asymmetric Pleated Skirt: Cascading pleats fall unevenly across the skirt for a fluid, floor-length drape with a modern, sculptural edge.
  • Square Neckline & Wide Straps: A straight-cut square neckline paired with substantial shoulder straps creates a polished, sophisticated frame for the décolletage.

Perfect For

Standing out as a wedding guest dress, styling with strappy heels and statement earrings for a black-tie gala, wearing to an upscale cocktail party, or making an entrance at prom night.

Care Instructions

  • Hand wash or machine wash on a delicate cold cycle.
  • Do not bleach.
  • Hang to dry or lay flat, and avoid the tumble dryer to preserve the pleated skirt shape.
  • Iron on a cool setting from the reverse side if needed.

Frequently Asked Questions

How does this gown close?
It features a smooth back zipper closure for an easy, secure fit.

What sizes are available?
This gown is available from size S through 3XL; please check the size chart for exact measurements.

How high does the side slit sit?
The slit rises to the thigh, adding movement and a bold, elegant edge while you walk.

What occasions is this gown suited for?
It's designed for weddings, black-tie galas, cocktail parties, and prom nights, transitioning easily between daytime celebrations and evening events.

Size Chart

Size Bust Waist Hips Length
S 86 cm / 33.9 in 66 cm / 26 in 92 cm / 36.2 in 130 cm / 51.2 in
M 90 cm / 35.4 in 70 cm / 27.6 in 96 cm / 37.8 in 131 cm / 51.6 in
L 94 cm / 37 in 74 cm / 29.1 in 100 cm / 39.4 in 132 cm / 52 in
XL 98 cm / 38.6 in 78 cm / 30.7 in 104 cm / 40.9 in 133 cm / 52.4 in
2XL 102 cm / 40.2 in 82 cm / 32.3 in 108 cm / 42.5 in 134 cm / 52.8 in
3XL 106 cm / 41.7 in 86 cm / 33.9 in 112 cm / 44.1 in 135 cm / 53.1 in

At Nicole's Coastal Boutique, customer satisfaction comes first. That's why we keep you constantly updated on your order and always offer free shipping with a track & trace code.

We offer a 100% money-back guarantee within 30 days of receiving your order. If you're not completely satisfied, simply return your item for a full refund—no questions asked.

Our customer service is available 24/7 to answer all your questions and comments. Whether you need advice on a product or help with an order, we are here to support you.

Don’t hesitate to contact us; we’re happy to help!

Please contact us at info@nicolescoastalboutique.com

A Little More to Love

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For today only, we're unlocking something special for our community: stackable savings on the pieces everyone can't stop reaching for.

Whether you're picking out something for your daughter, surprising your sister, or finally treating yourself, now's the moment to grab those favorites before they're gone.

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Buy 5+ → Extra 25% off

This offer runs today only and won't be coming back. And you know how it goes with us: once a style sells out, it's gone for good.

Stock is limited. Today's the day to shop.

FREE SHIPPING WITHIN THE U.S.

Free shipping on every order across the U.S. this week only. We’ll deliver straight to your door, safely and without extra cost.

30-DAY MONEY-BACK GUARANTEE

Shop with confidence. Every order comes with a 30-day money back guarantee, so you can try us risk-free.

Loved for the comfort

Our pieces are chosen for comfort you can feel and style you can count on. Relax, feel confident, and enjoy timeless elegance daily.

FREE SHIPPING WITHIN THE U.S.

Free shipping on every order across the U.S. this week only. We’ll deliver straight to your door, safely and without extra cost.

30-DAY MONEY-BACK GUARANTEE

Shop with confidence. Every order comes with a 30-day money back guarantee, so you can try us risk-free.

Loved for the comfort

Our pieces are chosen for comfort you can feel and style you can count on. Relax, feel confident, and enjoy timeless elegance daily.