K-pop's sexiest girl group, Nine Muses, are back with a predictably sexy new single, "Gun."

Three cheers for sexiness!

The sixties-themed single bares strong similarities to Rainbow's 2010 hit, "A," which probably stems from the two songs sharing the same producer. The Muses have produced a retro video to match the music, playing hot mechanics who hang out at a gas station and, well, look hot. They're all drop dead beautiful, and it's a breath of fresh air to finally see a K-pop music video filmed outside for once.

Who do you rank as the hottest member? We're stuck on Sera, Hyuna, Erin, and Kyungri, but really, it's anyone's game.