Iggy Azalea arriving for the World War Z World Premiere at Empire Leicester Square in London on June 2, 2013.

Iggy Azalea arrives for the Brit Awards 2013 at the O2 Arena in Greenwich, London on February 20, 2013.

Cher Lloyd arrives at the Clive Davis 2013 Pre-GRAMMY Gala at the Beverly Hilton Hotel on February 9, 2013 in Beverly Hills, CA.

Carly Rae Jepsen arrives at the 55th Annual Grammy Awards at the Staples Center on February 10, 2013 in Los Angeles, CA.

Carly Rae Jepsen arrives at the Billboard Music Awards 2013 at the MGM Grand Garden Arena on May 19, 2013 in Las Vegas, NV.

Carly Rae Jepsen arrives at the Clive Davis 2013 Pre-GRAMMY Gala at the Beverly Hilton Hotel on February 9, 2013 in Beverly Hills, CA.

Cassadee Pope at the 2013 CMT Music Awards at Bridgestone Arena in Nashville, TN on June 5, 2013.

Cassadee Pope at the 48th Annual Academy Of Country Music Awards Arrivals at MGM Grand Garden Arena in Las Vegas, NV on April 7, 2013.

Bella Thorne arrives at the Radio Disney Music Awards 2013 at the Nokia Theater on April 27, 2013 in Los Angeles, CA.