Size Chart

Not sure of your size? Let our AI fit quiz work it out

The fastest way to find your JulieMay size is our Brarista AI fit quiz. Built with expert bra fitters and trained on thousands of real fittings, it checks how your current bra fits (or measures you from scratch) and recommends your size and best style in about two minutes. Just tap Find my fit on any product page. Watch the quick how-to video at the bottom of this page to see how it works.

Prefer to measure yourself? Use the size charts below, and visit our Bra Fitting Room for bra fitting tips, measuring tips and recommendations based on your body shape and needs. You can also book a free virtual fitting there with our specialist Amanda.

For products with cup size




For products without cup size




For Knickers


Skip the tape measure: let the AI fit quiz find your size

Size charts are a good starting point, but around 80 percent of a bra's support comes from the band, and most women are wearing one that is too loose. Our Brarista fit quiz, co-created with expert bra fitters, checks how your current bra actually fits and works out your JulieMay size in about two minutes. No bra to check against? It can fit you with a tape measure instead, or recommend the best style for your shape. This short video shows how each option works.

Try the fit quiz

Book a free virtual fitting