What are the best one-piece swimsuits? If you’re looking for versatile swimwear that’s just as well-suited to a day at the beach as laps in the pool, you might be considering a one-piece swimsuit.

When it comes to trend-led styles (think polka dot, gingham or stripes for this season), the high street consistently delivers. Asos, Mango, New Look and River Island are a go-to for stylish swimwear ...

These compressive one-pieces, high-waisted two-pieces and other fuller-coverage suits offer flattering support.

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With so many different bathing suit styles and brands to choose from, knowing where to search for the best swimwear—and how to gauge your bathing suit size online—can be incredibly daunting.