Find Your Perfect Fit with Confidence
Step 1: Measure Your Bust and Waist
- Bust: Wrap a measuring tape around the fullest part of your bust, keeping it level.
- Waist: Measure around the narrowest part of your waist, usually just above the navel.
Step 2: Enter Your Measurements into the Calculator
Input your measurements into the WearPear Calculator to get a perfectly tailored fit designed just for you.
Lingerie Size Guide
Find your perfect fit with our comprehensive size guide for bras, shapewear, and underwear. All measurements are provided in both inches and centimeters.
How to measure yourself
Bra Size Guide (US)
| Band Size | Under Bust (inches) | Under Bust (cm) |
|---|---|---|
| 30 | 26-27 | 66-69 |
| 32 | 28-29 | 71-74 |
| 34 | 30-31 | 76-79 |
| 36 | 32-33 | 81-84 |
| 38 | 34-35 | 86-89 |
| 40 | 36-37 | 91-94 |
| 42 | 38-39 | 97-99 |
| 44 | 40-41 | 102-104 |
| Cup Size | Difference (inches) | Difference (cm) |
|---|---|---|
| AA | 0.5 | 1.3 |
| A | 1 | 2.5 |
| B | 2 | 5 |
| C | 3 | 7.5 |
| D | 4 | 10 |
| DD/E | 5 | 12.5 |
| DDD/F | 6 | 15 |
| G | 7 | 17.5 |
| H | 8 | 20 |
Shapewear & Underwear Size Guide (US)
| US Size | Bust (inches) | Waist (inches) | Hips (inches) |
|---|---|---|---|
| XS | 32-34 | 24-26 | 34-36 |
| S | 34-36 | 26-28 | 36-38 |
| M | 36-38 | 28-30 | 38-40 |
| L | 38-41 | 30-33 | 40-43 |
| XL | 41-44 | 33-36 | 43-46 |
| XXL | 44-47 | 36-39 | 46-49 |
| 3XL | 47-50 | 39-42 | 49-52 |
Panty Size Guide (US)
| US Size | Waist (inches) | Hips (inches) | Waist (cm) | Hips (cm) |
|---|---|---|---|---|
| XS (4) | 24-25 | 34-35 | 61-64 | 86-89 |
| S (5-6) | 26-27 | 36-37 | 66-69 | 91-94 |
| M (7-8) | 28-29 | 38-39 | 71-74 | 97-99 |
| L (9-10) | 30-32 | 40-42 | 76-81 | 102-107 |
| XL (11-12) | 33-35 | 43-45 | 84-89 | 109-114 |
| XXL (13-14) | 36-38 | 46-48 | 91-97 | 117-122 |
• Measure yourself without clothing for the most accurate fit
• For bras, subtract your under-bust measurement from your bust measurement to find your cup size
• If you're between sizes, size up for comfort
• Different styles may fit differently - check individual product descriptions
• For shapewear, consider your desired level of compression when choosing size
• Contact our customer service team for personalized fitting advice
How Do I Measure?
Before you start, put on a lightly lined bra — no push-ups or compression sports bras — and grab a soft measuring tape. If you don’t have a measuring tape, it’s no big deal. A string and a ruler work too.
Size FAQs
My measurements say I should order a size that’sdifferent than what I’m used to. Is that right?
Yes! Sizing differs from brand to brand, and here at WearPear we’ve redesigned our sizing from the seams up. We recommend you trust your WearPear size calculated from your measurements to start.
What should I do if I’m in between sizes?
If you feel that you’re in between sizes, then we recommend choosing based on how you like your bras to fit. Do you like a snug fit? Order the smaller size. Do you like a more relaxed fit? Order the larger!
This can also vary a little based on the specific style you’re looking at. Feel free to contact our team if we can help with specific advice!
What are sister sizes, and why do they matter?
Sister sizes are groups of bra-size equivalents that are related by cup volume, regardless of the band size and cup letter. For example, a 36A and a 38AA are technically the same size because the cup volume is the same. However, a 36A and a 38A are not equivalent sizes as the 36A cups will be smaller in volume.
The best way to use sister sizes is if your cup size feels good, but the band doesn’t. For example, if you’re a 36A, but the band feels too tight, you might like the 38AA better. Or, if the 36A band is too loose, then you might prefer the fit of a 34B.
What size of swimwear should I get?
Our swimwear will have the same perfect WearPear fit you know & love, so we recommend the same size as your . If you're new to , you can check out our Fit Guide and take our handy Size Quiz for size recommendations.