Shapewear & Faja Size Guide | How to Measure & Size Chart
The right size is what makes shapewear work. Too small and it rolls, digs in and feels painful; too big and it won't smooth. Use this guide to find your size for Cups Brazil fajas, bodysuits, shaper panties and waist trainers.
How to measure
- Waist: measure around your natural waist, the narrowest part of your torso, usually just above your belly button. Keep the tape snug but not tight.
- Hips: stand with feet together and measure around the fullest part of your hips and seat.
- Measure over bare skin or thin underwear, and breathe normally.
Size chart
| Size | US pant size | Waist (in) | Hips (in) |
|---|---|---|---|
| S | 2–4 | 26–29 | 35.5–38 |
| M | 6–8 | 29.5–33 | 38.5–42 |
| L | 10–12 | 33.5–36 | 42.5–45 |
| XL | 14–16 | 36.5–38.5 | 45.5–48 |
| 2XL | 18–20 | 39–42 | 48.5–52 |
| 3XL | 22 | 42.5–46 | 52.5–55.5 |
| 4XL | 24 | 46.5–50 | 56–58 |
Some styles run differently, so always check the size chart on the product page too.
Sizing tips
- Between sizes? Choose the larger one. Shapewear should feel snug, never painful.
- Waist and hips in different sizes? For waist trainers, go by your waist. For panties, shorts and bodysuits, go by your hips. For full-body fajas, go by the larger measurement.
- Waist trainers: start on the loosest hook row and build up wear time gradually.
- Post-surgery fajas: follow your surgeon's sizing and compression guidance.
- Fit check: you should be able to breathe deeply, sit for 15 minutes and move freely.

Still unsure? Email support@cupsbrazil.com with your waist and hip measurements and the product you want, and we'll recommend a size. More help in our FAQ and Shapewear Tips & Style Guides.