Ke$ha Totally Looks Like Ashley Tisdale
The equation is as follows: Ashley Tisdale + vodka + glitter + eyeliner = One fabulous hobo. One fabulous hobo - singing ability + John Travolta = Ke$ha.
Videl Totally Looks Like Selena Gomez
Justin Bieber, if you're reading this (and I like to imagine that you are), may I suggest an amazing "couples" costume idea???? Selena can go as Videl, and you can go as either Son Goku or a pair of dragon balls!