Today marks the summer solstice, which means the next few months boil down to long days and longer nights. It's no coincidence that the day also happens to be the one of the hottest of the year. There's no need to sweat, though. One way to beat the heat is to shed some layers and head to the beach, and where there is sand, there are bikinis. Lots of them. Who knows, if you're lucky, you might catch one of your favorite celebs frolicking in a two-piece at a wavy hotspot near you. Check out the hottest musicians who do their swimsuits justice.