The 29-year-old pop singer Kesha, who wrote “Till the World Ends” for Britney Spears, at the 2016 Billboard Music Awards at T-Mobile Arena in Las Vegas, Nevada.
The 29-year-old pop singer Kesha, who wrote “Till the World Ends” for Britney Spears, at the 2016 Billboard Music Awards at T-Mobile Arena in Las Vegas, Nevada.