Buy a swimsuit labeled "long torso.

Yes, that’s the answer. Regular one-pieces are cut for an average torso, and if yours is longer, you’ll either get a wedgie or a weird gap at the shoulders. Don’t try to stretch a regular suit—it won’t work, and it’ll be uncomfortable.

Look for “long torso” or “tall” in the size options. Brands like Lands’ End, Athleta, and J.Crew carry them. You might also find “tall” sections at places like Target or Amazon. The extra inch or two in the body makes a huge difference. If you’re between sizes, size up for length.

Also: “tankini” is a cheat code. Two pieces that look like one, and you can mix sizes for top and bottom. But if you want a true one-piece, just buy the right cut.

Your torso will thank you.