Women's Tops Size Chart

The same numbers as dresses, applied to a category with a much wider range of intended fit

Women's tops convert between US, UK, and EU sizing using roughly the same numeric relationships as dresses — a US 6 landing near a UK 10 and a EU 38 — but tops as a category span a far wider range of intended silhouettes within a single brand's size run than dresses typically do, from close-fitting knitwear through deliberately oversized tees. That range is the main reason this chart is a looser guide for tops than the equivalent dress chart, even though the underlying numbers are similar.

A fitted blouse and a relaxed oversized tee at the identical labeled size from the same brand aren't necessarily built around comparable actual chest measurements, since the amount of design ease varies by style far more than it does for a dress, where the intended shaping is more consistent across a brand's range.

Vanity sizing has moved unevenly across this category

US sizing has drifted toward smaller numbers for the same body measurements over recent decades — a well-documented pattern across most American clothing — but tops sizing specifically seems to have drifted more inconsistently within a single brand than dress sizing has, likely because the wide range of fit intentions makes it harder to keep one size number meaning one consistent measurement across an entire tops line.

Bust-only sizing versus a fuller hourglass assumption

Which body assumption a specific top is built on is the single hardest thing about this category to see from the size number alone — the individual US-to-UK and US-to-EU tops conversion pages on this site walk through that distinction and what to check for it in more depth than a single-chart overview can usefully cover.

European tops more often default to a closer, layering-conscious cut

Continental brands, particularly French and Italian ones, more commonly build tops — especially fine knitwear — with a closer, body-following cut than mainstream American casual tops default to, sometimes specifically because the piece is intended to be worn layered under a jacket rather than as a standalone garment. A EU size correctly converted to a US number can still feel roomier than the European original, reflecting this cut and layering-culture difference rather than a conversion error.

Fabric weight changes the effective size as much as the label does

Two tops can share a printed size and a nominally identical body measurement on the label while sitting completely differently once worn, purely because of how much the fabric itself contributes to the finished shape — a variable this chart's number-only comparison can't show. Trust your own bust measurement over the label whenever the two disagree.

The one habit that generalizes across every tops purchase

Whatever else varies by style, brand, and country, checking the garment's own bust measurement against the retailer's specific chart before an unfamiliar purchase is the single highest-value habit for this category — more so than for jeans or dresses, where the size number alone carries more of the real information.

Necklines and closures add another fit variable beyond the size number

A deep V-neck and a high crew neck at the identical labeled size can look and feel quite different, and closures like buttons or wrap-ties add adjustability that a fixed pullover style doesn't have — a wrap top, for instance, tolerates more sizing imprecision than a fitted button-front blouse, since the wrap itself adjusts to the body regardless of the base size.

Sleeve length varies independently of the size number too

A three-quarter sleeve, a long sleeve, and a sleeveless style from the same brand and size aren't guaranteed to share the same shoulder-to-cuff proportion, since sleeve length is frequently adjusted per style rather than scaled uniformly across a brand's whole range — worth checking a specific style's sleeve measurement if length matters as much as overall fit.

Layering pieces (cardigans, blazers) need extra room factored in

A top meant to be worn as a base layer under a cardigan or blazer is sometimes cut slightly closer than a standalone piece at the identical size, on the assumption that the outer layer will add its own room — converting the base layer's size alone doesn't guarantee the combined layered look fits the way you expect.

Maternity and nursing tops follow their own separate logic

See this site's dedicated maternity chart rather than converting through this everyday one — maternity tops follow a different reference point (your size before pregnancy, not a converted number). Nursing-specific tops add their own discreet access panels on top of that, a feature entirely separate from any size-number conversion.

Return policies matter more for an uncertain tops conversion than for some other categories

Because tops span such a wide range of intended fits within one brand's numbering, a converted size is genuinely more likely to need an exchange than, say, a correctly converted shirt-collar size — checking a specific retailer's return and exchange policy before ordering an unfamiliar brand's fitted top is a reasonable extra step given how much variability this category carries compared to more standardized garment types.

This is particularly worth doing for international orders, where a return can be slower and more expensive than a domestic one — factoring in the hassle of a potential exchange is a legitimate part of deciding how much weight to put on this chart's standard conversion versus ordering two adjacent sizes to compare in person.

Built-in shelf-bra tops add a support consideration on top of the regular chart

A top with a built-in shelf bra or bandeau lining is sized primarily against the outer garment's chest measurement, the same as any other top, but the built-in support itself typically offers far less structure than a dedicated bra, so someone who needs real support shouldn't expect the built-in feature to substitute for one — the size conversion covers the outer fit, not the support level.

Turtleneck and mock-neck tops add a throat-circumference fit consideration beyond the chest

A close, structured turtleneck has to also comfortably clear the neck's own circumference, which doesn't scale in exact proportion with chest size the way this chart assumes — someone with a fuller neck relative to their chest size can find a correctly converted turtleneck feels tight at the throat even though the body of the garment fits, worth checking a brand's stated neck opening where one is published.

Fabric with lycra or spandex blended in shifts vanity-sizing behaviour compared with rigid wovens

A stretch-blended top can be labelled more generously than a rigid woven top of the identical actual chest measurement, since the fabric's own give does some of the work a larger size number would otherwise have to do — comparing two tops' stated fabric content, not just their size label, helps explain why a stretch top and a woven top in the 'same' size can measure differently when laid flat.