Fantasie Size & Fit Guide

← Fit by Brand

Find Fantasie sizing for bras, panties and swimwear, including strapless bras, bikini tops, tankinis and one-piece swimsuits. Use UK cup letters with your US band for cup-sized pieces and choose bottoms separately.

US band numbers only. Keep your fitted US band number when comparing cup labels: a 34 band stays 34. Cup letters can change between brands. Always choose a size offered on your exact product.

Fit by product & style

Aura strapless & Ana spacer

Fit Aura with straps removed; the band should stay secure. Ana’s molded spacer cup has a different shape from a cut-and-sewn side-support bra.

Bra-sized swimwear

Keep your US band and use Fantasie’s UK cup below for cup-sized bikini tops, tankinis and swimsuits.

Bottoms & one-pieces

Select briefs and swim bottoms independently using waist/hip fit. A one-piece also needs a comfortable torso length. Send us bust, waist, hips and height if between style labels.

UK cup letters with US bands

Fantasie uses UK cup lettering on our cup-sized products. US DD/E becomes UK DD; US DDD/F becomes UK E. UK E is a different cup from US DD.

Cup comparison — keep your US band number
Familiar US cup UK cup to select
A A
B B
C C
D D
DD / E DD
DDD / F E
G F
H FF
I G
J GG
K H
L HH
M J
N JJ
O K

For example, US 34DDD/F corresponds to 34E in this cup comparison. A comparison is a starting point, not a promise of identical fit across brands. For labels beyond this chart, contact our team.

How to measure & check fit

Use a soft tape. Measure the fullest part of your bust, your natural waist and the fullest part of your hips, keeping the tape level without pressing into the body. Tables labeled body measurements refer to you, rather than the garment laid flat.

For bras, measure snugly directly below your bust and around the fullest bust in an unpadded bra. These measurements help our team assess a starting size; band methods and cup construction differ by style.

  • The band should sit level and feel secure without restricting breathing.
  • Cups should contain the bust without spilling or gaping, and wires should sit around breast tissue comfortably.
  • Adjust straps without using them to compensate for a loose band. Check fit while sitting and moving.

Shop styles covered by this guide

Open your product to see its size options and fit notes. Listed size ranges do not imply every band-and-cup combination is available.

Need help with this style?

Send us the product name, your measurements, and the brand and size of a garment that fits you well. For bras, include snug underbust and full bust; for bottoms include waist and hips. We can confirm the cup convention and size range for the exact style. Contact our fitting team or learn about a LaBella bra fitting.