How does Aerie bra sizing run?
Aerie is labelled in US sizing, carrying cups A–DDD. Relaxed, soft cups for an unstructured day. Below is how a Aerie size translates across all eight regional standards, plus sister sizes and where to buy.
Aerie size range & system
Aerie sizes in US, with cups A–DDD. Known for bralette, everyday.
Aerie size conversion chart
Each row is one Aerie cup size read across the eight standards. The US column (highlighted) is how Aerie labels its bras.
| US | UK | EU | FR | IT | AU | JP | IN |
|---|---|---|---|---|---|---|---|
| A | A | A | A | A | A | A | A |
| B | B | B | B | B | B | B | B |
| C | C | C | C | C | C | C | C |
| D | D | D | D | D | D | D | D |
| DD | DD | E | E | E | DD | E | DD |
| DDD | E | F | F | F | E | F | E |
Band conversions are exact; cup fit still varies by brand, style, and body — a conversion is a starting point, not a guarantee.
Common Aerie sizes
Open the full eight-standard conversion for a specific size:
Sister sizes in Aerie
If a Aerie bra fits in the cup but the band is off, your sister size keeps the same cup volume with a different band — go down a band and up a cup, or up a band and down a cup. Example: a 34D and a 32DD hold the same cup volume.
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Aerie sizing FAQ
- Does Aerie run true to size?
- Relaxed fit. Great bralettes. Runs slightly generous. Body-positive brand.
- What sizing system does Aerie use?
- Aerie is labelled in US sizing, with cups from A to DDD. Use the conversion table above to read your size across US, UK, EU, FR, IT, AU, JP and IN.
- What is a 34D in Aerie in EU sizing?
- A US 34D converts to EU 75D. Band conversions are exact; cup fit still varies by brand, style, and body — a conversion is a starting point, not a guarantee.