Katy Perry and Zooey Deschanel(Getty)

Karrueche Tran seen heading to dinner at Aventine in Hollywood, CA on December 20, 2014 (SplashNews)

Karrueche Tran seen heading to dinner at Aventine in Hollywood, CA on December 20, 2014 (SplashNews)

Rita Ora performs onstage during 103.5 KISS FM's Jingle Ball 2014 at Allstate Arena on December 18, 2014 in Chicago, Illinois. (Photo by Tasos Katopodis/Entertainment/Getty Images for iHeartMedia)

Rita Ora performs onstage during 103.5 KISS FM's Jingle Ball 2014 at Allstate Arena on December 18, 2014 in Chicago, Illinois. (Photo by Adam Bettcher/Entertainment/Getty Images for iHeartMedia)

Rita Ora performs onstage during 103.5 KISS FM's Jingle Ball 2014 at Allstate Arena on December 18, 2014 in Chicago, Illinois. (Photo by Adam Bettcher/Entertainment/Getty Images for iHeartMedia)

Rita Ora performs onstage during 103.5 KISS FM's Jingle Ball 2014 at Allstate Arena on December 18, 2014 in Chicago, Illinois. (Photo by Adam Bettcher/Entertainment/Getty Images for iHeartMedia)

Selena Gomez arrives at the Screening of 'Rudderless' in LA Oct. 7, 2014 (Getty)

Selena Gomez arrives at the Screening of 'Rudderless' in LA Oct. 7, 2014 (Getty)

Selena Gomez arrives at the Screening of 'Rudderless' in LA Oct. 7, 2014 (Getty)

Selena Gomez arrives at the Screening of 'Rudderless' in LA Oct. 7, 2014 (Getty)

Jordin Sparks (SplashNews)

Ciara arrives at the Valentino show as part of the Paris Fashion Week Womenswear Spring/Summer 2015 on September 30, 2014 in Paris, France. (Photo by Pascal Le Segretain/Entertainment/Getty Images)

Ciara attends the Givenchy show as part of the Paris Fashion Week Womenswear Spring/Summer 2015 on September 28, 2014 in Paris, France. (Photo by Dominique Charriau/WireImage)

Amber Rose (SplashNews)

Amber Rose (Courtesy of Instagram)

Selena Gomez attends the CR Fashion Book Issue No.5 Launch Party Hosted by Carine Roitfeld and Stephen Gan at The Peninsula Paris on September 30, 2014 in Paris, France. (Getty)

Jennifer Lopez attends Fashion Rocks 2014 presented by Three Lions Entertainment at the Barclays Center of Brooklyn on September 9, 2014 in New York City. (Photo by Larry Busacca/Getty Images for Three Lions Entertainment)

Nina Dobrev poses in the press room during the 2014 MTV Video Music Awards at The Forum on August 24, 2014 in Inglewood, California. (Photo by Jason Merritt/Entertainment/Getty Images for MTV)

Khloe Kardashian (Courtesy of Instagram)

Shay Mitchell (Courtesy of Instagram)

Take that Nicki Minaj & Drake! Rihanna, in Adam Selman, attends the 2014 CFDA fashion awards at Alice Tully Hall, Lincoln Center on June 2, 2014 in New York City. (Photo by Dimitrios Kambouris/Getty Images)

Take that haters! Kim Kardashian shows off her post-baby/pre-wedging body as her and Kanye West go shopping at Balenciaga, Collette and Montaigne market in Paris on May 19, 2014. (SplashNews)

Justin Who? Selena Gomez posted this sexy bikini pic on May 20, 2014 (Courtesy of Instagram)

Justin Who? Selena Gomez posts provocative pic in London on May 31, 2014 (Courtesy of Instagram)

Justin Bieber is trying to make Selena Gomez jealous by showing off his sexy dance moves on May 31, 2014. (Courtesy of Instagram)

No more Justin, Kylie? Kylie Jenner posted this sexy pic in a bikini on May 31, 2014 (Courtesy of Instagram)

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)

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

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

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)

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