Christina Aguilera [1] certainly isn't afraid to get down and "dirrty" [2] in her music videos. Whether she's shaking her hips in a boxing ring or flaunting her stuff in lingerie, the singer always knows how to turn up the heat a few notches. Since we can't get enough of her iconic music videos [3], we've decided to roundup some of her sexiest moments right here. From her Stripped days to her NSFW "Not Myself Tonight" music video, these GIFs will have you breaking out in a sweat. And if that's not enough Xtina for you, be sure to check out her incredible evolution [4].