They've come a long way! See how your favorite pop icons -- including Katy Perry, Beyonce, Kelly Clarkson, and more -- became super chic red carpet pros
Aguilera played it safe as a fresh-faced teen idol. But now? The 31-year-old Voice coach isn't afraid to experiment with accessories and curve-hugging silhouettes. "I like to keep it fresh and interesting," she told Us Weekly about her style on the singing competition. "I get bored and I'm an artist first and foremost . . . I love theatrics."