Aerie Underwear Size Chart
Aerie runs true to size.
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Aerie Men's Underwear Size Chart
| Size | US | EU | UK | Waist (cm) | Hips (cm) |
|---|---|---|---|---|---|
| S | S (28-30) | 3 | S | 71-76 | 86-91 |
| M | M (32-34) | 4 | M | 81-86 | 96-101 |
| L | L (36-38) | 5 | L | 91-97 | 104-109 |
| XL | XL (40-42) | 6 | XL | 102-107 | 112-117 |
| XXL | XXL (44-46) | 7 | XXL | 112-117 | 119-124 |
Aerie Women's Underwear Size Chart
| Size | US | EU | UK | Waist (cm) | Hips (cm) |
|---|---|---|---|---|---|
| XS | XS (0-2) | 34 | 6 | 58-63 | 84-89 |
| S | S (4-6) | 36 | 8-10 | 64-69 | 89-94 |
| M | M (8-10) | 38-40 | 12-14 | 69-76 | 94-102 |
| L | L (12-14) | 42-44 | 16-18 | 76-84 | 102-109 |
| XL | XL (16-18) | 46-48 | 20-22 | 84-94 | 109-117 |
| XXL | XXL (20-22) | 50-52 | 24-26 | 94-102 | 117-124 |
Data verified Apr 2026 · Official size guide · See an error? Report it
Aerie Sizing & Fit Guide
Aerie underwear runs true to size with a comfortable, relaxed fit. Their Real Me collection uses stretchy fabric that adapts to your shape. If between sizes, Aerie recommends going with the smaller size for bikinis and the larger for boyshorts.
Related Underwear Size Charts
Frequently Asked Questions
Aerie underwear runs true to size with a comfortable, relaxed fit. Their Real Me collection uses stretchy fabric that adapts to your shape. If between sizes, Aerie recommends going with the smaller size for bikinis and the larger for boyshorts.
Measure your waist at the narrowest point (usually just above the belly button) and your hips at the widest point. Then use our size chart table above to find your Aerie size.
If you're between sizes in Aerie underwear, we recommend sizing up for a more comfortable fit. Underwear that's too tight can be uncomfortable throughout the day, while slightly loose underwear is usually fine.