Lily Allen

So, Lily Allen is getting played on my new pandora station (What I got by Sublime and Paper Planes by M.I.A.). Does anyone know anything about her? Is she cool? Is she ok to listen too without feeling like a loser (I already feel like a loser for listening to Regina Spektor)? How popular is she? Was she on SNL about 4 years ago? Is she as bad ass as she sounds?

I like her a lot. I hope this is ok. Please tell me more about her.