Size Guide

OnceWas fits vary from relaxed to tailored across different styles and fabrications. Please note we have all garment measurements on each product page under size and fit. If you require further fitting advice please email us at hello@oncewas.com.au or call our customer care during business hours and we can help you find the perfect fit.

SIZE METRICS

AU SIZE AU6 AU8 AU10 AU12 AU14 AU16 AU18 AU20
OW SIZE 0 1 2 3 4 5 6 7
GENERIC XXS XS S M L XL 2XL 3XL
US 2 4 6 8 10 12 14 16
BUST (CM) 80–85 85–90 90–95 95–100 100–105 105–110 110–115 115–120
WAIST (CM) 60–65 65–70 70–75 75–80 80–85 85–90 95–100 100–105
HIP (CM) 88–93 93–98 98–103 103–108 108–113 113–118 123–128 128–133


PETITE SIZING - UNDER 5'4"

PETITE AU SIZE (UNDER 5’4”) AU6 AU8 AU10 AU12 AU14 AU16
PETITE OW SIZE 0 1 2 3 4 5
GENERIC XXS XS S M L XL
US 2 4 6 8 10 12
BUST (CM) 80–85 85–90 90–95 95–100 100–105 105–110
WAIST (CM) 60–65 65–70 70–75 75–80 80–85 85–90
HIP (CM) 88–93 93–98 98–103 103–108 108–113 113–118

 

Our Petite collection is thoughtfully designed for women under 5'4" (164cm). This is more than just a scaled-down version of our main range—each piece has been meticulously re-proportioned to flatter smaller frames, with adjusted lengths, rises, and silhouettes that eliminate the need for tailoring.

The collection is available in Petite sizes 6 to 16, offering a tailored fit without compromising on style.

To help you find your best fit, detailed garment measurements are listed on each product page. We recommend measuring a similar item from your wardrobe and comparing it to the flat lay measurements provided. For additional guidance, check the 'Size and Fit' section on each Petite product page.

Style and proportion, perfectly tailored—for you.

 

Measuring Guide:
We provide all garment measurements on each product page under 'Size and Fit'. These measurements are taken of the garment lying flat.
To ensure the best fit, we recommend using a tape measure to compare these measurements with a similar item from your wardrobe. Please refer to the instructions below for guidance on accurately taking your own measurements.

Bust
Measure around the fullest part. Arms should be down by your side and slightly apart. Make sure the measuring tape is straight across the body.
True Waist
Measure around the natural waist line with the measuring tape straight across the body.
Hip
Measure around the fullest part of hip with the measuring tape straight across the body.

Ecommerce Models: