How to size swimsuits correctly
Measure first, label second
Pick a tape measurement and match it to the chart. Labels (S/M/L, US/UK/EU numbers) drift between brands; the underlying body measurement does not. Bust, waist, and hip measurements over the underwear you'll wear. Suits should be tight when dry and relax in water.
Picking between two sizes
Pick the smaller of two sizes for one-piece and bikini tops; pick the larger for high-cut bottoms. Synthetic spandex blends loosen with chlorine and sun exposure.
Brand and regional variation
The same labeled size can differ by a full size between brands and regions. Asian brands generally run a half size smaller than US brands; European brands fall in between. When in doubt, use the centimetre or inch measurement on the size chart, never the letter.
Common mistakes
- Sizing by your old favourite without checking the new brand's chart.
- Skipping the measurement step. Body shape changes; old numbers go stale.
- Picking too tight in non-stretch fabrics — they don't break in the way leather does.
- Trusting a single review's "runs small / runs large" without looking at the reviewer's measurements.