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Size 1 is a true UK size 8. If you’re in between sizes we suggest you take a size up.
COSSIE+CO sizing is very simple - swimsuits are sized 0 to 4. Below is a conversion chart with comparable sizing. Not all styles are available in all sizes. If you have any questions feel free to email us on firstname.lastname@example.org
Those with a fuller bust or long torso may wish to take one size up.