Underwire swimsuits, along with halter tops, probably provide the best support for your bust. Underwire swimsuits are a great choice for women with smaller as well as larger busts, as the underwire swimsuit is known to provide the best support while women look great wearing them. Underwire swimsuits are available in both one and two piece styles. The best part about underwire swimsuit styles is that the underwires remain hidden to the public while contouring your body and accentuating your curves. Regardless of your bust size, you can show off your curves in sexy underwire swimsuits!