If you haven't yet seen Juicy Couture's latest jean ad, you're in for a treat.  Starring the lovely Karlie Kloss, the ad focuses on "girl power" and features her walking around a California beach kicking ass. And not just any ass, we're talking yummy male model ass.  The best part?  The video is dedicated to charity!  Check it out after the jump.

**If you tweet using #girlskickass, Juicy Couture will donate $1 to Step Up Womens Network, a nonprofit organization that  aids women to fulfill their full career potential.

Karlie Kloss kicking some gorgeous hunk butt.