The One Black

Jemimah wears size 30E
Mercy wears size 34G
Natasha wears size 36DD
Use size guide to convert from UK displayed sizes

If your dress and bra band size are the same, we recommend purchasing your bra size. If they are different, apply the sister size rule to find your perfect fit. Our one pieces are made to fit the body first, sister sizing will adjust your bra size to match your body size, without changing your cup volume. Follow the below examples to find your fit.

Dress size larger than bra band size
- Bra 34DD (12DD AU) & Dress 14 AU
- Size up ↑ in the bra band (36)
- Size down ↓ in the cup size (D)
- One piece size = 36D

Dress size smaller than bra size
- Bra 34DD (12DD AU) & Dress 10 AU
- Size down ↓ in the bra band (32)
- Size up ↑ in the cup size (E)
- One piece size = 32E

14 day returns
Return for a store credit

See full returns policy here.

Australia
FREE AusPost Express on orders over $275
AusPost Express: $10 (1-2 days)

United States & Canada
FREE DHL Standard on orders over $230
FREE DHL Express on orders over $460
DHL Standard: $10 (4-8 days)
DHL Express: $30 (3-5 days)

New Zealand
FREE DHL Standard on orders over $310
FREE DHL Express on orders over $620
DHL Standard: $10 (3-5 days)
DHL Express: $30 (2-3 days)

United Kingdom
FREE DHL Standard on orders over £190
FREE DHL Express on orders over £380
DHL Standard: £10 (4-6 days)
DHL Express: £20 (2-4 days)

Rest of world
FREE DHL Standard on orders over $230 USD
FREE DHL Express on orders over $460 USD
DHL Standard: $10 USD (5-15 days)
DHL Express: $40 USD (4-8 days)

Please note: As orders are shipped from our Australian
warehouse you may incur customs duties, foreign taxes or other fees. We do not cover these charges and are not liable for any fees incurred.

Shipping timeframes are estimates only. Full shipping policy here.

Recycled stretch sculpting fabric
78% Recycled Nylon, 22% Elastane
Rinse after chlorine and hand wash cold

100% of the nylon used in our fabric is made from pre-consumer waste that is recycled at one of the most advanced facilities in the United States. This is then combined with elastane for unparalleled stretch. The result is a weightless, soft touch fabric that sculpts the body like a second skin.