Christina Aguilera attends the NBCUniversal's "The Voice" Press Junket and cocktail reception on August 12, 2012 in Los Angeles, California. Credit: Christopher Polk/Getty

It's been awhile since Christina Aguilera switched up her signature platinum blonde hair, but on Sunday, she surprised her fans when she debuted a playful new look: purple highlights!

At The Voice press junket and cocktail reception in L.A., the star, 31, worked the red carpet with her soft purple streaks placed throughout her long blonde hair. To highlight her deeply bronzed skin, she sported a curve-hugging black-and-white mini teamed with an edge leather jacket.

While her hair has remained fairly the same, Aguilera definitely takes huge, dramatic risks with her wardrobe. During Season 2 of The Voice, she sported everything from risque cleavage-baring numbers to a record-inspired fascinator.

"I like to keep it fresh and interesting," the the NBC oval competition's judge told Us Weekly of her style on the show back in April. "I get bored and I'm an artist first and foremost. I'm from the world of making videos and touring and I love theatrics."

Besides a new-and-improved coif, Aguilera has been cooking up some brand-new tunes. "Just wrapped up another great studio session- WOW- seriously can't WAIT for you guys to hear what I've been working on!!- Love u guys!!" she tweeted earlier this month.