Size Guide

Designed to sculpt, contour, and adjust beautifully to your body.

Most One Empire styles fit true to size, however sizing and fit may vary slightly between designs depending on the fabrication, coverage, and structure of the piece. We recommend reading the fit notes and garment description on each product page for the best size recommendation.

Many of our styles feature adjustable straps, stretch fabrics, and flexible fits designed to contour comfortably to your shape.
If you are between sizes, we generally recommend sizing up for a more comfortable fit. Customers with fuller busts (DD+) may also prefer sizing up in certain styles for additional coverage and support.
Our sizing is based on body measurements and designed as a guide to help you find your perfect fit.
Most customers choose their usual AU size in One Empire styles.

Between sizes? We recommend sizing up for a more comfortable fit.

Quick Guide

DD+ cup sizes may prefer sizing up in certain styles for additional coverage and support.

AU Size One Empire Size

6-8 Small

10-12 Medium

12-14 Large

14-16 Extra Large

Model Sizing

You’ll find model measurements and the size worn listed on each product page to help compare fit and coverage.

Product Fit Notes

Every product page includes individual fit notes to help guide your size selection, including details such as:

True to size
Runs small
High stretch

Lingerie & Underwear
How to measure your body
Pyjamas

Size Bust (cm) Waist Size (cm)

S 86-90 66-70

M 90-94 70-74

L 94-100 74-80

XL 100-106 80-86
1. Your bust

Measure the circumference over the fullest part of your bust.

2. Your under bust

Measure directly underneath your bust where your bra band sits.

3. Your cup

Cup size is determined by the difference between your bust and underbust measurements. For example, a 12cm difference typically corresponds to a B cup.. Your cup size is based on the difference between your bust and underbust measurement.

CUP SIZE Difference (cm) Bust - Under bust

A 7.5-10

B 10-12.5

C 12.5-15

D 15-17.5

E 17.5-20

F 20-22.5

G 22.5-25
Most customers choose their usual AU size in One Empire styles.

Size (AU) Bust (inches) Hips (inches)

8 42 36

10 44 38

12 46 40

14 48 42

16 50 44

Need help finding your perfect fit?
Email us at info@oneempire.com.au with your usual bra size, AU clothing size, and preferred fit, and our team will happily recommend the best size for you.