Katy Perry's Grammys Performance - Watch Now!

Katy Perry rocks out on stage at the 2012 Grammy Awards held at Staples Center on Sunday (February 12) in Los Angeles.

The 27-year-old singer, who wore a costume made by Abigail Greydanus and rocked the AllSaints “Damisi” boot, performed her hit “E.T.” and new song “Part of Me” from the special edition of her double-platinum certified album, Teenage Dream: The Complete Confection. The song will be released on iTunes tomorrow (February 13)!

“Now look at me, I’m sparking/A firework, a dancing flame/You won’t ever put me out again,” Katy sang. “So you can keep the diamond ring.” Singing about ex-husband Russell Brand, perhaps?