Avril Lavigne musician troubadour nightclub

Just for the night, anyway!

Kristen Stewart wasn't the only starlet trying to sneak out of the Troubadour last night -- we also caught a solo Avril Lavigne and a gal pal trying to hide in the back seat of a massive chauffeured SUV. Avril didn't look grouchy or drunk, but rather calm and ladylike. If this is the effect Brody is having on her, we're all for it!