Is Sweaty Betty true to size?
Sweaty Betty is true to size. Most shoppers wear their usual size, especially in activewear. British activewear, true to size, UK sizing Check the category notes below for tops, bottoms, and outerwear specifically.
Sweaty Betty generally runs true to size.
Sweaty Betty uses UK sizing. True to size but US customers should check the conversion chart.
Confidence: High, based on official size chart and shopper sentiment
Sizing overview
Most shoppers start with their usual size. Use the notes below to see where Sweaty Betty feels slimmer, roomier, or more consistent across categories.
Sweaty Betty is true to size. True to size. UK sizing, check conversion.
Plain-language cut notes and examples below show where pieces usually feel closer, roomier, or most predictable.
GENERAL BRAND GUIDANCE
This is a general brand-level sizing summary, not an exact product recommendation. For your specific size, paste a product link into the fit checker.
Sweaty Betty is true to size. British activewear, true to size, UK sizing
How to read Sweaty Betty sizing
Sizing tendency
Most shoppers start with their usual size.
Consistency
Low variation across categories.
Best check
Start with the category note, then check whether the cut is meant to feel structured or relaxed.
Variability and caveats
When Sweaty Betty can feel different from the usual sizing tendency
Cut
Cut matters most when a piece is intentionally tailored or intentionally oversized.
Fabric stretch
Fabric stretch changes how strongly the sizing tendency shows up: more give softens it, less give makes it more obvious.
Styling
This brand is fairly consistent, but styling can still shift the feel when a piece is meant to be sharply fitted or deliberately oversized.
Sweaty Betty Sizing by Category
True to size. UK sizing, check conversion.
What to expect
Expect activewear to follow the label fairly closely unless the piece is intentionally oversized or sharply tailored.
True to size with UK sizing.
What to expect
Expect tops to follow the label fairly closely unless the piece is intentionally oversized or sharply tailored.
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Common questions about Sweaty Betty sizing
Is Sweaty Betty true to size?
Sweaty Betty is true to size. British activewear, true to size, UK sizing Most shoppers start with their usual size.
What size am I in Sweaty Betty if I wear a Medium?
A Medium at Sweaty Betty is roughly the same as a Medium at most contemporary brands. Fit can vary across activewear and tops, so confirm against the specific category you are shopping.
Does Sweaty Betty fit differently by category?
Yes. Fit varies by category at Sweaty Betty, covering activewear and tops, since the same brand often cuts activewear and tops to different proportions.
Is Sweaty Betty's size chart accurate?
Sweaty Betty publishes an official size chart, and ThisFits cross-references it against real shopper fit reports. Sweaty Betty shows low variation across categories, so the chart is a reliable starting point with adjustments based on cut.
What if I'm between sizes at Sweaty Betty?
Sweaty Betty fits true to size, so when you are between sizes, pick based on how close you want the cut to feel. Sizing up gives a relaxed feel and sizing down gives a more fitted silhouette.
How does Sweaty Betty sizing compare to other brands?
Sweaty Betty sizes similarly to H&M and Uniqlo, your usual size applies. Shoppers commonly compare Sweaty Betty against other contemporary labels in the same category to translate sizes between brands they already wear.
Can I return Sweaty Betty items if the size is wrong?
Sweaty Betty typically accepts returns on unworn items with tags within the window stated on the order page or receipt. Policies vary by retailer and third-party sellers may differ, so confirm before ordering.