Bra sizes by brand

Brands cut and label sizes differently. Compare size ranges across twelve UK brands and retailers, and translate your measured size into each one.

Brand data last verified: not yet verified · 0 of 12 brands checked

How we handle brand sizing

We only show a brand-specific size after checking it against that brand’s own published size chart, and we date every check. Brands marked “Sizing data pending verification” haven’t been checked yet, so we show your standard UK size instead of guessing.

Size ranges compared

BrandBandsCupsSizing MethodLast Verified
ASOSSizing data pending verificationSizing data pending verificationSizing data pending verificationSizing data pending verification
Boux AvenueSizing data pending verificationSizing data pending verificationSizing data pending verificationSizing data pending verification
BravissimoSizing data pending verificationSizing data pending verificationSizing data pending verificationSizing data pending verification
Curvy KateSizing data pending verificationSizing data pending verificationSizing data pending verificationSizing data pending verification
ElomiSizing data pending verificationSizing data pending verificationSizing data pending verificationSizing data pending verification
FreyaSizing data pending verificationSizing data pending verificationSizing data pending verificationSizing data pending verification
John LewisSizing data pending verificationSizing data pending verificationSizing data pending verificationSizing data pending verification
Marks & SpencerSizing data pending verificationSizing data pending verificationSizing data pending verificationSizing data pending verification
NextSizing data pending verificationSizing data pending verificationSizing data pending verificationSizing data pending verification
PanacheSizing data pending verificationSizing data pending verificationSizing data pending verificationSizing data pending verification
TriumphSizing data pending verificationSizing data pending verificationSizing data pending verificationSizing data pending verification
Victoria’s Secret UKSizing data pending verificationSizing data pending verificationSizing data pending verificationSizing data pending verification

Why the same person wears different sizes in different brands

A size label is a starting point, not a standard. Brands use their own patterns, so the same labelled size can have a different band tension, cup depth or wire width. Some brands also still size with the traditional method, which adds inches to the band.

Once a brand is verified, its page translates your measured size into its own sizing, using the method and adjustments from its published chart. Until then, start with your measured size and use sister sizes if the band or cups feel different.

Brand pages

ASOS

Your size in ASOS sizing

Boux Avenue

Your size in Boux Avenue sizing.

Bravissimo

Your size in Bravissimo sizing

Curvy Kate

Your size in Curvy Kate sizing

Elomi

Your size in Elomi sizing

Freya

Your size in Freya sizing

John Lewis

Your size in John Lewis sizing

Marks & Spencer

Your size in Marks & Spencer sizing

Next

Your size in Next sizing

Panache

Your size in Panache sizing

Triumph

Your size in Triumph sizing

Victoria’s Secret UK

Your size in Victoria’s Secret UK sizing

If a brand’s size feels wrong

Sister Size Calculator

Every size with the same cup volume, and when to try each.

Fit Diagnosis

Select your fit problems and get a specific size to try.

Why your size feels wrong

Brand, shape, style and method differences.

Sophie Dixon

Sophie Dixon

Hi, I’m Sophie Dixon, the creator of UK Bra Size Calculator. I built this tool because I was tired of seeing women guess their bra size from outdated charts that rarely fit right. I researched UK bra fitting standards and measurement methods in depth so I could offer both the modern and traditional sizing approaches side by side – giving you an honest comparison instead of a single guess. Everything runs privately in your browser, and I’m always refining the calculator to make it more accurate.