The fit intelligence platform for women
Find activewear
that fits your body.
Take a 2-minute fit quiz and see how activewear fits women with a similar build.
Know the question?
Start where shoppers
actually search.
Body-shape guides
Best activewear for your shape
Leggings, bras, shorts, tops, and jackets grouped by fit signal for apple, pear, hourglass, rectangle, and inverted triangle bodies.
Browse Best Fits →Brand size guides
Does this brand fit true to size?
Check brand and category guides before buying: what runs small, where reviews agree, and which products need more fit data.
Browse Size Guides →Product reviews
Compare fit before checkout
Use product-level fit breakdowns, body-match reviews, and “own this?” review prompts to make the next recommendation stronger.
Browse Products →Shopping a specific brand?
Most searched
Popular Size Guides
Sweaty Betty
Leggings Size Guide
True to size · Pear and hourglass
Oner Active
Leggings Size Guide
True to size · Hourglass and pear
Tala
Leggings Size Guide
True to size · Curvy and plus-size
Lululemon
Leggings Size Guide
True to size · Petite and hourglass
Gymshark
Leggings Size Guide
Runs small · Size up recommended
How it works
Three steps.
Zero guessing.
Tell us your measurements
Height, bust, waist, hips, your usual size. Takes 3 minutes. Completely private.
See what women like you ordered
We match you to real reviews from women with a similar build. Not brand size guides — real data.
Buy the right size, first time
Know what to order before you click buy. No more returns because a 12 felt like an 8.
What women are saying
Real fit data.
Real measurements.
Lululemon
Align Legging 25"
“Finally a legging that sits right on my waist. Ordered my usual 12 and it was perfect.”
5'4" · Size 12 · Hourglass
Ordered: 12
Gymshark
Vital Seamless Leggings
“I usually wear a 12 but sized up to a 14. Glad I did — these are very tight across the hips.”
5'6" · Size 12 · Pear
Ordered: 14
Sweaty Betty
Power Bra
“Great support for running. The band doesn't roll and it doesn't dig in.”
5'5" · Size 12 · Rectangle
Ordered: 12
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Everything you need
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Why Forre exists
Done buying the
wrong size?
Brand size guides are written by brands. They're marketing. Forre is built on data from women who actually bought the thing, tried it on, and told the truth.
We match you to women with your height, shape, and measurements — not a generic “medium.”
Build My Fit Profile →No brand bias
Decathlon sits next to Lululemon. Best fit wins.
Real measurements
Reviews include actual body data, not just "I'm a medium."
All bodies
XS to 4X. Every shape. Every height.
Always free
Browse and discover for free. Join to see your matches.
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Know your size.
Every brand. Every time.
Create your fit profile in 3 minutes and see recommendations from women built like you.
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