THIRD FORMHidden Gem Tank Maxi Dress
$69.00$360.00
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Black sleeveless maxi dress with V-neck and centered button-front placket
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  • Black sleeveless maxi dress with V-neck and centered button-front placket
  • Black sleeveless maxi dress back view with simple shoulders and subtle side ruching
  • Black tank maxi dress with V-neck, sleeveless cut, and button-front ruching
  • Black sleeveless tank dress close-up: V-neck and button-front placket with light buttons
  • Black sleeveless maxi dress with V-neck and vertical ruched placket with buttons
  • Black sleeveless maxi dress side view with V-neck and button-front detailing
  • Black sleeveless maxi dress with V-neck and centered button-front placket
  • Black sleeveless maxi dress back view with simple shoulders and subtle side ruching
  • Black tank maxi dress with V-neck, sleeveless cut, and button-front ruching
  • Black sleeveless tank dress close-up: V-neck and button-front placket with light buttons
  • Black sleeveless maxi dress with V-neck and vertical ruched placket with buttons
  • Black sleeveless maxi dress side view with V-neck and button-front detailing
Hidden Gem Tank Maxi Dress
THIRD FORM

Hidden Gem Tank Maxi Dress

$69.00
$69.00 $360.00
81% OFF · Save $291.00

Buy now pay later options available at checkout

True to size · Bamboo stretch knit · Keyhole cut-out maxi

SIZE

Third Form Size Guide

AUS / UK Size EUR Size US Size Bust (CM) Waist (CM) Hip (CM)
6 / XS 34 2 80 63 90
8 / S 36 4 85 68 95
10 / M 38 6 90 73 100
12 / L 40 8 95 78 105
6/XS
8/S
10/M
12/L

Model is 177cm (5'10") and wears AU8/S.

✔ Same day dispatch before 2pm

✔ Free AU shipping over $200

✔ Easy 14 day returns

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Sydney? Pick up in 2 hours.

Alexandria NSW boutique · ready in 2 hours

VIEW STORE INFORMATION

520 Botany Road
Alexandria NSW 2015
10am - 4pm · Monday to Friday
+61 431 133 529

Sculpted slim-fit maxi silhouette.

Designed for evening events, occasion dressing, and elevated after-dark wear.

  • True to size with slim fit through body and hips
  • Maxi length (136cm at AU8)
  • Keyhole cut-out with soft gathering detail
  • Five custom-cut organic stone embellishments
  • Lightweight bamboo stretch knit
  • Soft-touch finish
  • Shoulder width: 35cm at AU8
MODEL MEASUREMENTS
  • Wearing AU8/S
  • Height: 177cm (5'10")
  • Waist: 65cm
PRODUCT DESCRIPTION

The Third Form Hidden Gem Tank Maxi Dress in Black is a sculpted maxi dress designed for evening events, occasion dressing, and elevated everyday wear. Cut from a soft bamboo stretch knit, this black maxi dress contours the body through a slim, body-skimming silhouette that finishes at the floor.

A central keyhole cut-out is finished with soft gathering across the front, while five custom-cut organic stones anchor the design with quiet sculptural detail. The lightweight stretch fabrication moves easily through the body, making it ideal for long-event wear. Discover more sculpted silhouettes in our Maxi Dresses edit or browse the full Third Form collection.
FABRIC COMPOSITION
  • 92% Bamboo
  • 8% Spandex
SHIPPING & RETURNS

Fast Dispatch

Orders placed before 2pm (Sydney time) are dispatched the same day.

Same Day Delivery (Sydney Metro)

Available on eligible orders placed before 11:30am Monday–Friday.

Australia Shipping

Free standard shipping on orders over $200

Free express shipping on orders over $400

International Shipping

Rates calculated at checkout based on location.

Easy Returns

Change of mind? We offer easy returns in line with our policy.
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Black sleeveless maxi dress with V-neck and centered button-front placket
THE DESIGNER

THIRD FORM

A Label with a Feel for Now

Effortless meets refined in Third Form’s signature aesthetic. Founded in Australia and known for its sharp minimalism, this label blends clean tailoring with directional silhouettes, always keeping things polished but never overdone.

The Third Form collection at BELLA n’ BEAR is a curated edit of sleek wardrobe staples and standout pieces—designed to take you from desk to dinner, and day to after-dark with minimal effort and maximum style.

Tailored, Toned, and Textured

Third Form’s strength lies in its modern restraint. Expect structured yet fluid shapes, cut-out details, and unexpected textures—from crushed satin to rib knits and soft tailoring.

Pair a slim-fit Midi Skirt with a sculpted top, or go all-in with one of the label’s understated Neutral Dresses. Whether you’re dressing for a work event or drinks with friends, these pieces let your style do the talking—quietly, confidently.

A Smart Take on Occasionwear

Not every occasion dress needs sequins. Third Form proves that sleek lines and quality fabric speak volumes. These designs hold their own at weddings, parties, launches, or gallery nights—anywhere polished edge is the vibe.

Love a Little Black Dress with a twist? You’ll find more than a few options here.

Flexible Shopping, Fast Dispatch

Enjoy complimentary same day dispatch from our Sydney HQ, plus flexible payment options at checkout with Afterpay, Zip & Klarna. Free shipping available on qualifying orders.

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