Katy Perry and Zooey Deschanel(Getty)

Selena Gomez arrives at the premiere of 'Spring Breakers' during the SXSW Festival on March 10, 2013. No wonder Justin Bieber begged her to take him back! (Getty)

Rihanna got revenge by going unbuttoned at Da Silvano Restaurant in NYC on May 8, 2013. (Getty)

Eat your heart out, Harry Styles! Taylor Swift looked white hot in Ralph Lauren at the People's Choice Awards on Jan. 9, 2013. (Getty)

Katy Perry got back at ex John Mayer with a sexy two-piece outfit at the Nickelodeon's 26th Annual Kids' Choice Awards on March 23, 2013. (Getty)

Chris Brown gets in from all the exes! Karrueche Tran got her revenge on January 21, 2013. (FameFlynet)

Sandra Bullock looked incredible attending the 'Extremely Loud & Incredibly Close' premiere on December 15, 2011 in New York City. Sorry, Jesse James -- you deserved it. (Getty)

Take that, Rupert Sanders! Liberty Ross went see-through at the Academy Awards Oscars, Vanity Fair Party on Feb. 24, 2013. (Getty)

If Tom Cruise wasn't crazy already, this dress Katie Holmes wore at the '12-12-12' concert at Madison Square Garden on December 12, 2012 probably did it. (FameFlynet)

Heidi Klum wowed on the red carpet at the Emmy Awards in a plunging double-high side slit dress on Sept. 23, 2012. (Getty)