By Rose Walano
Updated Jul 26, 2012 @ 5:30 pm
Katy Perry, Carrie Underwood
Credit: MavrixOnline; Todd Gillis/iPhoto

There's nothing basic about these black bikinis! Katy Perry flaunted her figure in triangle-top two-piece for a trip to Miami, while Carrie Underwood visited her husband in Canada in a similar look, only with a punched-up addition of neon piping. Sleek and sexy! Click through to see more of our favorite celebrity bikinis.