Size Guide
Find Your Perfect Fit
Designed for A & B cups. Use our tools below to discover your ideal size and the bra made for you.
Size Calculator
Enter your measurements to find your perfect WearFitslim size.
How to Measure
Size Chart
All measurements in centimeters. For inches, divide by 2.54.
| Size | Under-bust (cm) | Full Bust (cm) | Cup Difference | US Size |
|---|---|---|---|---|
| 30AA | 63–67 | 72–74 | ~7 cm | 30AA |
| 30A | 63–67 | 74–77 | ~10 cm | 30A |
| 30B | 63–67 | 77–80 | ~13 cm | 30B |
| 32AA | 68–72 | 77–79 | ~7 cm | 32AA |
| 32A | 68–72 | 79–82 | ~10 cm | 32A |
| 32B | 68–72 | 82–85 | ~13 cm | 32B |
| 34AA | 73–77 | 82–84 | ~7 cm | 34AA |
| 34A | 73–77 | 84–87 | ~10 cm | 34A |
| 34B | 73–77 | 87–90 | ~13 cm | 34B |
| 36A | 78–82 | 89–92 | ~10 cm | 36A |
| 36B | 78–82 | 92–95 | ~13 cm | 36B |
| 38A | 83–87 | 94–97 | ~10 cm | 38A |
| 38B | 83–87 | 97–100 | ~13 cm | 38B |
Find Your Perfect Bra
Answer 5 quick questions — we'll recommend the exact style made for you.
What's your current band size?
Don't worry if you're unsure — pick the closest one.
And your cup size?
WearFitslim is designed specifically for AA, A & B cups.
What's your biggest bra frustration?
Be honest — this helps us find your perfect match.
How do you wear your bra most often?
We'll match you with the right style for your lifestyle.
Almost there! Where should we send your results?
Get your personalized recommendation + 10% off your first order.
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Based on your answers, we've found the bras that will fit you perfectly — no gaps, no slipping, just confidence.
Recommended For You
Curated based on your fit profile
Simply Smooth T-Shirt Bra
Lift Up Bra
Limitless Wirefree Scoop Bra
How to Measure Yourself
Get your most accurate measurements in 3 simple steps.
Step 1 — Band Size
Wrap a soft measuring tape snugly around your ribcage, directly under your bust. Keep it level and parallel to the floor. Round to the nearest even number.
Step 2 — Bust Size
Measure around the fullest part of your bust, keeping the tape loose and comfortable. Don't pull tight — let it rest naturally against your skin.
Step 3 — Cup Size
Subtract your band measurement from your bust measurement. Each inch (or 2.5 cm) of difference equals one cup size: 1" = A, 2" = B, 3" = C, etc.
Fit Tips From Our Experts
Frequently Asked Questions
Everything you need to know about fit, sizing and our bras.
When in doubt, go up in band size and down in cup size. For example, if you're between 32A and 34A, try 34AA first. Our bras are designed with a snug band that provides most of the support, so a slightly larger band with a smaller cup will still give you a great fit.
Cup gap is the #1 fit issue for A and B cups, and it's exactly what WearFitslim was designed to solve. If you're experiencing gap, try going down one cup size. Our Gap-Free Cup Technology is specifically engineered to eliminate this problem for smaller busts.
Yes, our bras run true to standard US sizing. If you've been wearing a 32A in other brands, start with a 32A in WearFitslim. However, if your current bra has always felt slightly loose in the band, consider trying a 30A with us — our bands are designed to be supportive without being restrictive.
Absolutely. We offer a 30-day hassle-free return policy. If your bra doesn't fit perfectly, contact us at support@wearfitslim.co and we'll help you find the right size or issue a full refund — no questions asked.
The Simply Smooth T-Shirt Bra is our everyday invisible bra — ultra-smooth under any top, with light padding for a natural shape. The Lift Up Bra has more structured cups with our signature lift technology, giving you more visible volume and shape. Both are wire-free and designed for A & B cups.
For best results, hand wash in cold water with a gentle detergent and lay flat to dry. If machine washing, use a lingerie bag on a delicate cycle. Avoid tumble drying — heat breaks down the elastic and padding over time. With proper care, your WearFitslim bra will maintain its shape and support for 6-12 months of regular wear.