The
"Oops! ... I Did It Again" pop star, 30, rocked pink and blue hair
extensions when she joined Ryan Seacrest, 37, on stage during the
iHeartRadio Music Festival in Las Vegas Sept. 21. Spears showed
off her
trim figure in a black minidress by David Lerner and glitter platform
heels by Charlotte Olympia.
"Hello,
Las Vegas!" a beaming Spears said onstage. "You know why I love this
festival. It's packed with every kind of music fan." (Performers
included Jason Aldean, Rihanna and Bon Jovi, among others.)
Spears added, "This is Vegas, baby, so we've got the world's most insane deejays here to keep the party going all night long."
Though
Spears only recently decided to experiment with a more colorful 'do,
fellow "X Factor" judge Demi Lovato, 20, rocked rainbow hairstyles
throughout the show's nationwide talent auditions this summer. The two
musicians joined veteran judges Simon Cowell, 52, and L.A. Reid, 56, on
the FOX hit, which airs Wednesdays and Thursdays at 8 p.m. EST on FOX.
Tell Us: Do you like Britney Spears' rainbow hair extensions?
This article originally appeared on Usmagazine.com