hat jacket hollywood Deryck Whibley sum 41 avril lavigne beard singer musician voyeur

Hopefully he won't run into his estranged wife Avril one of these nights ... I mean, how incredibly awkward would that be?! Then again, that's a set of pictures we'd love to see!

Last night a solo Deryck Whibley was spotted at Voyeur in Hollywood, and the Sum 41 singer seemed to be enjoying his night of freedom. Soo ... when's he going to step out with another lady love?