New year, new 'do? Earlier this week, Austin Mahone shared a hilarious Instagram pic of himself rocking a crazy blowout. "What do you think? New look for 2014?" he captioned the photo.
Though Austin isn't the only one to try an unexpected hairstyle this year. Harry Styles, Demi Lovato, Bella Thorne, Selena Gomez and more stars switched up their tresses, too. From guys' messy manes to girls' colorful looks, celebs tested out tons of over-the-top looks in 2013.
Click through the above slideshow to see the year's 20 craziest hair changes, and vote for the most shocking in the comments.