Julianne Hough: Trevor Live! with Diego Boneta

Julianne Hough recreates Old Hollywood glamour on the red carpet as she arrives at 2011 Trevor Live! held at The Hollywood Palladium on Sunday night (December 4) in Los Angeles.

The annual event brings together top entertainers and corporate leaders to support The Trevor Project‘s lifesaving initiatives, including its free and confidential lifeline, in-school workshops, educational materials, online resources and advocacy.

Julianne, 23, and Diego, 21, hit the stage at the event, performing a number from their upcoming film, Rock of Ages.

FYI: Julianne wore a Collette Dinnigan with Salvatore Ferragamo pumps and Le Vian earrings.

15+ pics inside of Julianne and Diego…