"Bionic" Christina Aguilera is no more.
Aguilera showed up to the "Unmasking" of Resnick Pavilion with a mane of blonde hair, a billowy Atelier Versace dress, a pair of Louboutins and a Christian Dior clutch.
Also at the event: Teri Hatcher, Nicole Richie, "House" star Olivia Wilde and Kim Kardashian.
Take a closer look!