If you can’t spend much, these Aqua Culottes will fit the bill. It's a foolproof choice, while not very pricey. You can also take a look at this Aqua Jumpsuit. It's an item you'll fall in love with which also doesn't cost a fortune.
If you're looking for an item in the middle of the price range, look no further than this Aqua Romper. This item doesn't cost the earth, but absolutely deserves a spot in your wardrobe. It's also worth taking a look at this Aqua Pleated Skirt. This piece is ultra popular and, just as importantly, not very expensive.