Brody Jenner arrived with his Mum, Linda Thompson, at the 17th Annual Race to Erase MS event at the Hyatt Regency in Los Angeles.
During the event Avril performed a song, sharing the stage with others.
Got to say, she looks amazing and looks as if she's enjoying herself very much.
After the event they picked up a somber looking Avril Lavigne.
According to reports, Avril had spent most of the night watching her ex-partner Deryck Whibley cozying up to Hanna Bell. Looks like someone maybe isn't quite over her ex...