Katy Perry's newest song off the upcoming release of her album Teenage Dream, 'Part of Me', is essentially a huge diss directed towards ex-husband Russell Brand, and the video basically plays off of her emotions.  The video begins with Katy catching her lover flirting with another woman so she breaks up with him, and decides to leave.  On a convenience store wall she sees a flyer for the Marines, and in a moment of heated exhilaration she cuts off her long, dark tresses in a very tense and emotional scene.  A little comical moment happens when Katy wraps her boobs trying to flatten them, but it is to little avail as we all know she has some massive breasts.  We have now moved to boot camp and see Katy going through the training course essentially being a bad@$$.  She is keeping up with the best of them, and we see Katy become a strong and confident woman.  And I must say that her hair looks really great cut short.  It would be a great look for her to try out.  Overall, it was a very unexpected video to come from Katy, but it is really great.