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LAS VEGAS, NV - JULY 05: Singer Kesha arrives at the Hard Rock Hotel & Casino during the resort's Rehab pool party on July 5, 2015 in Las Vegas, Nevada. (Photo by Steven Lawton/Getty Images)

LAS VEGAS, NV - JULY 05:  Singer Kesha arrives at the Hard Rock Hotel & Casino during the resort's Rehab pool party on July 5, 2015 in Las Vegas, Nevada.  (Photo by Steven Lawton/Getty Images)