Katy Perry Talks Debuting 'Part Of Me' At The 2012 Grammy Awards

Katy Perry chats with Access about debuting her new single, "Part of Me," at the 2012 Grammy Awards. Why did she pick the Grammys to debut the song? And, when did she actually write the song? Plus, what does Katy like about the new "Sims 3" game? "The... more