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
The "We Found Love" singer has never been afraid to show a little skin. Now, she mixes in some grown-up elegance when she steps out for galas, award shows and more.
Credit: George Pimentel/WireImage.com; Fernando Leon/Getty Images for TIME