Our girl Britney Spears is jumping on the dip-dyed hair trend, ya'll! And we're kind of obsessed with it.

The 'X Factor' judge made a surprise appearance at the 2012 iHeart Radio Music Festival in Las Vegas, and not only did she bring her winning and vivacious attitude and personality with her, she also brought some colorful new hair, presumably to show the world that she's still the young, funny Spears that we've all come to know and love.

Appearing alongside Ryan Seacrest, Spears sported a short, tight black dress and her signature blonde locks with ends dyed a pink and teal color. Maybe she got the inspiration for her new 'do from fellow 'X Factor' judge Demi Lovato, who sported pink locks during the audition segments of the reality show.

"Hello Las Vegas!" shouted the singer as she made her way on to the stage to introduce the start to the festival. "You know why I love this festival? It's packed with every kind of music fan!" After Seacrest went on about the types of performers the festival had to offer, Spears continued, saying, "And this is Vegas, baby! So we've got the worlds most insane DJ's going to keep the party all night long!"

Watch Britney Spears and Ryan Seacrest on Stage at the iHeart Radio Music Festival