Miley Cyrus arrives at the 2011 American Giving Awards at Dorothy Chandler Pavilion on December 9, 2011 in Los Angeles, CA.

Miley Cyrus arriving at the 2011 MTV Video Music Awards at the LA Live on August 28, 2011 in Los Angeles, CA.

Miley Cyrus arrives at the 2011 Pre-GRAMMY Gala And Salute To Industry Icons at Beverly Hilton Hotel on February 12, 2011 in Beverly Hills, CA.

Miley Cyrus at the Los Angeles premiere of the new movie “Justin Bieber: Never Say Never” at the Nokia Theatre LA Live in Los Angeles, CA on February 8, 2011.

Miley Cyrus at the 2009 MTV Movie Awards Arrivals at Gibson Amphitheatre in Universal City, CA on May 31, 2009.

Jessica Sanchez at the 2013 Teen Choice Awards at the Gibson Ampitheater Universal on August 11, 2013 in Los Angeles, CA.

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.