Watch Grammys 2013: Katy Perry dress Skrillex Rihanna dress 2013 Grammys Katy Perry dress Skrillex Rihanna dress 2013 Grammys Katy Perry dress Skrillex Rihanna dress 2013 Grammys Katy Perry dress Skrillex Rihanna dress 2013 Grammys Katy Perry dress Skrillex Rihanna dress 2013 Grammys Katy Perry dress Skrillex Rihanna dress 2013 Grammys Katy Perry dress Skrillex Rihanna dress 2013 Grammys