Buy a tankini with a supportive top and stretchy bottom.

Yes — a tankini separates set is the best way to get both growing room and real support.

Tankinis give you two pieces that move independently. The top stays fitted with a shelf bra or underwire (look for wide straps and a band that won’t ride up), while the bottom has a stretchy, ruched panel that grows with you. That combo is way more forgiving than a one-piece that either gets too tight or too baggy.

Full-coverage one-pieces with clever ruching and built-in bras can work too, but they’re harder to fit if your belly pops early or you’re between sizes. Avoid anything with underwire that sits on the belly — it’s uncomfortable and pointless.

You don’t need to spend a fortune. Target, Old Navy, and Amazon all have solid options under $40 that hold up for a season.

Your bump is temporary, but your comfort poolside isn’t.