Sure, Will Ferrell and Chad Smith know how to put on a good drum-off. But, they've got some real competition from Cara Delevingne. The supermodel showed off her skills at Charlotte Tilbury's Makeup House Of Rock 'N' Kohl event at Selfridges. And, she's really good. We shouldn't be too surprised by this, though. After all, Delevingne is pretty punk rock already. That she's also a riff master feels natural. Check her out in the clip below. Even though she takes her jam session very seriously, she also manages to look fairly adorable behind the kit.