Katy Perry Covers Rebecca Black’s “Friday”

Rebecca Black has caught a lot of heat over her song "Friday." To some it's catchy and inspiring for the weekend. For others it's an Autotune nightmare. Regardless of which position you take, you have to give the girl mad props... Her song has now been performed before a sold out arena in Melbourne, Australia, by none other than Katy Perry!

To Rebecca, I say: Good for you! You go girl!