1. Christina Aguilera
The Voice judge and songstress to envy, Christina Aguilera came into the spotlight when she was a young teenager and hasn’t left since then. But while we’ve always thought she was gorgeous, there’s no denying she’s dropped a lot of weight since the picture on the left was taken at the 2011 American Music Awards. Though her hair is the same color, she’s still rocking the same red lips, and her attitude is just as big and bold, the pic on the right, taken at The Voice Season 5 Top 12 party on November 7, 2013 shows a totally different Christina.