You look totally different now than you did five years ago. It's the same with your favorite celebrities. You just might not realize it. To prove how much they've changed, here are a few of your favorite stars' beauty transitions, brought to you by Seventeen:
1 Taylor Swift
She looks different than she did in 2008, but she looks just as beautiful.
2 Justin Bieber
Bieber proves that men can change their style just as much as women can.