"Part of Me" is Katy Perry's record-breaking 6th #1 single of a single album, "Teenage Dream: The Complete Confection".  The song is reportedly a jab and Katy's now ex-husband, comedian Russell Brand, with some critics saying that the lyrics are empowering, while others say they are a little too vicious.  For the new video for "Part of Me", Katy goes through boot-camp to become a Marine.

A jilted woman that is trained how to use a machine gun.  Might not be the worst idea for Russell Brand to stay in England until she cools down a bit.