Neil Patrick Harris & David Burtka: Trevor Project Live 2011!

Neil Patrick Harris and David Burtka attend the Trevor Project’s 2011 Trevor Live event held at The Hollywood Palladium on Sunday (December 4) in Los Angeles.

The 38-year-old How I Met Your Mother actor and his 36-year-old partner hit the stage to perform “You’re the Top” together.

“Had fun performing with @Davidburtka tonight at the @TrevorProject’s Trevor Live,” Neil wrote on his Twitter account. “A powerful night. An amazing group of people. #grateful.”

Also at the event, Modern Family‘s Julie Bowen and Jesse Tyler Ferguson, who was accompanied by his beau, Justin Mikita.

10+ pictures inside of Neil Patrick Harris and David Burtka at Trevor Live 2011…