Cut-Out Mermaid Evening Dress – Glitter Sweetheart Prom Gown (Custom Size)

Finding a Prom or Evening Gown That Fits Your Body — Not Just a Standard Size — Shouldn’t Be This Hard

Standard sizing fails most women. A gown that fits the bust pulls at the hips. One that fits the waist gaps at the back. And when you’re dressing for prom, a gala, or a formal evening that matters, “close enough” isn’t good enough. You want a gown that was made for your measurements — one that fits so well it feels like it was designed for you specifically, because it was.

This Cut-Out Mermaid Evening Dress is available in standard US sizes 2–16 and plus sizes 14W–26W, with custom sizing available for any measurements. The mermaid silhouette sculpts and elongates the figure, the sweetheart neckline frames the décolletage beautifully, and the glitter fabric catches the light with every movement. A built-in bra provides support without the need for additional undergarments, and the sweep train adds drama and elegance to the full-length silhouette.

The Mermaid Silhouette — Why It Works

The mermaid cut is one of the most flattering formal silhouettes available. It follows the natural curves of the body from the bust through the hips, then flares dramatically below the knee — creating an hourglass effect that accentuates the waist and hips while allowing full movement. The floor-length hem and sweep train complete the look with a sense of occasion and drama that shorter styles simply cannot achieve.

Glitter Fabric and Sweetheart Neckline

The glitter fabric is woven with light-catching threads that create a continuous shimmer across the entire gown — not just sequin patches, but a full-surface sparkle that photographs beautifully and looks stunning under event lighting. The sweetheart neckline is one of the most universally flattering necklines in formal wear, creating a soft, romantic frame for the face and décolletage without requiring a strapless bra.

Cut-Out Detail and Split

The cut-out detail adds a contemporary, fashion-forward edge to a classic silhouette — a considered design choice that elevates the gown beyond a standard prom dress into something genuinely memorable. The split allows freedom of movement and adds a further element of drama to the mermaid hem.

Custom Sizing Available

Standard sizes 2–16 and plus sizes 14W–26W are available to order. For a truly perfect fit, custom sizing is also available — simply provide your bust, waist, hip, and height measurements at checkout. Processing time is 3–15 working days depending on the size and customisation required.

Size Guide

• Size 2 — Torso length approx. 83cm / 32.7"
• Size 4 — Torso length approx. 84cm / 33.1"
• Size 6 — Torso length approx. 88cm / 34.6"
• Size 8 — Torso length approx. 90cm / 35.4"
• Size 10 — Torso length approx. 93cm / 36.6"
• Size 12 — Torso length approx. 97cm / 38.2"
• Size 14 — Torso length approx. 100cm / 39.4"
• Size 16 — Torso length approx. 104cm / 40.9"
• Size 14W–26W — Plus sizes available; custom measurements recommended for best fit

Product Specifications

• Silhouette: Mermaid / Trumpet
• Neckline: Sweetheart
• Length: Floor-length with sweep train
• Fabric: Glitter polyester / satin blend
• Decoration: Crystal, sequin, ruched, pleated, draped details
• Built-in bra: Yes
• Sleeve: Sleeveless
• Sizes: US 2–16, plus 14W–26W, custom available
• Colour: Customisable — contact us for colour options
• Processing time: 3–15 working days
• Occasions: Prom, formal evening, gala, party, graduation, cocktail