Adam Lambert: 'I Wanna Hear U Roar!'

Adam Lambert heads out for a night at the Chateau Marmont on Sunday evening (August 11) in West Hollywood, Calif.

The day before, the 31-year-old singer posted his support for his pal Katy Perry with the release of her new single “Roar”!

PHOTOS: Check out the latest pics of Adam Lambert

“Yes!!!!! I wanna hear u Roar!!!!! #roar @katyperry,” Adam wrote on his Twitter account.

Last week, Adam was one of the many celebrities who were spotted attending the opening night party for the new club Hooray Henry’s.