Photos of pop star Kesha, whose hits include "Timber" and "Tik Tok."

Credit: Getty Images / Kevin Winter

Recording artist Kesha performs onstage during the 2016 Billboard Music Awards at T-Mobile Arena on May 22, 2016 in Las Vegas, Nev.

Credit: Getty Images / Robin Marchant

Kesha performs at the 9th Annual Delete Blood Cancer Gala in Manhattan on April 16, 2015.

Credit: AP / Matt Sayles

Kesha arrives at the MTV Video Music Awards at The Forum in Inglewood, Calif., on Sunday, Aug. 24, 2014.

Credit: Getty Images / Jason Merritt

Kesha arrives at the MTV Video Music Awards at The Forum in Inglewood, Calif., on Sunday, Aug. 24, 2014.

Credit: AP / Jordan Strauss

Kesha arrives at the world premiere of "Planes: Fire And Rescue" at El Capitan Theatre in Los Angeles on Tuesday, July 15, 2014, in Los Angeles.

Credit: AP / John Shearer

Kesha arrives at the Billboard Music Awards at the MGM Grand Garden Arena on Sunday, May 18, 2014, in Las Vegas.

Credit: AP / Richard Shotwell

Kesha arrives at The Humane Society Of The United States 60th Anniversary Benefit Gala on Saturday, March 29, 2014, in Beverly Hills, Calif.

Credit: AP / Jordan Strauss

Kesha arrives at the American Music Awards at the Nokia Theatre L.A. Live on Sunday, Nov. 24, 2013, in Los Angeles.

Credit: AP / Dan Steinberg

Singer Kesha arrives at the Banana Republic L'Wren Scott Collection launch party at the Chateau Marmont on Tuesday, Nov. 19, 2013, in West Hollywood, Calif.

Credit: AP / Eric Jamison

In this Sept. 21, 2013 photo, Kesha arrives at the iHeartRadio Music Festival, at the MGM Grand Garden Arena in Las Vegas.

Credit: Getty Images

Kesha arrives at the iHeartRadio CES exclusive party for a performance at Haze Nightclub at the Aria Resort & Casino at CityCenter on January 9, 2013 in Las Vegas.

Credit: Getty Images

Kesha attends the Jingle Ball 2012 concert in Washington, D.C., on Dec. 11, 2012.

Credit: Getty Images

Kesha performs onstage during a Jingle Ball 2012 concert in Washington, D.C., on Dec. 11, 2012.

Credit: Getty Images

Kesha performs during the 40th American Music Awards in Los Angeles, on Nov. 18, 2012.

Credit: Getty Images / Frazer Harrison

Kesha arrives at the 60th annual BMI Pop Awards at the Beverly Wilshire Four Seasons Hotel in Beverly Hills, Calif., on May 15, 2012.

Credit: Getty Images

Singer Kesha attends the 2nd Annual amfAR Inspiration Gala at The Museum of Modern Art on June 14, 2011 in New York City.

Credit: AP

Ke$ha arrives at the MTV Video Music Awards at the Nokia Theatre in Los Angeles on Sept. 12, 2010.

Credit: AP

Ke$ha, left, and Trey Songz introduce a performance at the MTV Video Music Awards at the Nokia Theatre in Los Angeles on Sept. 12, 2010.

Credit: AP

Best new artist nominee Ke$ha arrives at the MTV Video Music Awards at the Nokia Theatre in Los Angeles on Sept. 12, 2010.

Credit: Getty Images

Singer Ke$ha performs on NBC's "Today" at Rockefeller Center on Aug. 13, 2010.

Credit: Getty Images

Singer Ke$ha poses during a taping of the Today Show at Rockefeller Center on August 13, 2010 in New York City.

Credit: Getty Images

Singer Ke$ha performs on the Today Show at Rockefeller Center in New York City on Aug. 13, 2010.

Credit: Getty Images

Singer Ke$ha performs at Madison Square Garden in Manhattan. (Aug. 12, 2010)

Credit: Getty Images / Carlos Alvarez

Singer Kesha performs on stage at the Penelope CLub on June 10, 2010 in Madrid, Spain.

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