O'Neill Women's Size Guide
O'Neill Women's Size Guide
Fit Summary
O'Neill is a US surf & beach lifestyle brand using US sizing as base standard for women’s tops. Women’s styles include surf rash guards, beach tanks, graphic tees, flowy beach blouses and lightweight knit layers, available in Regular, Fitted and Relaxed silhouettes. Regular-fit beach tops generally run true to size; fitted rash guards are second-skin cut for water sports, while relaxed boho beach blouses and oversized tees feature generous volume. Stretch jersey and rashguard fabrics offer elasticity; woven linen blend beach blouses have minimal stretch. Fit varies noticeably between tight water-sport base layers and loose flowy casual beach tops. Shoppers selecting non-stretch woven beach blouses are recommended to size up for comfort.
Similar sizing reference: US surf beach womenswear sizing, rash guard fitted styles run snug, boho woven beach silhouettes are roomy, sizing tailored for coastal and vacation wear.
Note: UK / EU / AU / CN‑Size marked "≈" are approximate conversions for reference only. This guide covers women’s tops only; bottoms, dresses and outerwear are not included. Actual garment fit depends on fabric and silhouette.
| Intl | US | UK ≈ | EU ≈ | AU ≈ | CN国标号型 ≈ | Bust(cm) | Bust(in) |
|---|---|---|---|---|---|---|---|
| XS | 0-2 | 4-6 | 34 | 6 | 155/80A | 80 | 31.5 |
| S | 2-4 | 6-8 | 36 | 8 | 160/84A | 85 | 33.5 |
| M | 6-8 | 10-12 | 38 | 10 | 165/88A | 90 | 35.4 |
| L | 10-12 | 14 | 40 | 12 | 170/92A | 95 | 37.4 |
| XL | 14-16 | 16 | 42 | 14 | 175/96A | 100 | 39.4 |
Last updated: Q3 2026 · Reviewed quarterly by SizeHub editor | Source: O'Neill official size guide reference
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