I am trying to find a rashguard and l need one that has a built-in bra but have been unsuccessful.I've found a few online but I'd rather buy one in person.Do most have built-in bras or is this not common?

Rashes r not made like that. They r made of very thin very stretchy almost see-through material. The primary goal is to protect u from sun damage.

Men do not need to wear anything under them but women do. A bikini top is standard. If u have an overly large chest, there r underwire bikini tops although they r hard to find, & also 1 piece swimsuits.

With 1 piece suits, you'd want a competition style suit - they r not like other swimwear & will keep everything ''secure'' while allowing really good freedom of movement.

I've never seen one that had any kind of bra built in, so I'd say you're very unlikely to find one like that at a reasonable price. Certainly not in a shop.

Most people just wear a bikini top underneath it, from what I've seen. l am a guy but my daughter always wears a bikini top under hers.