Demi Lovato is no stranger to the UFC world. Not only is she a big fan, but she practices mixed martial arts herself. She'll also extend her talents to the Mayweather vs. McGregor fight in Las Vegas this weekend when the singer opens the event by belting out the National Anthem. As Billboard points out, Demi is no stranger to such a task. She's sung the National Anthem at the World Series in 2011 and 2015.
The Mayweather vs. McGregor fight airs this Saturday on 9:00 p.m. ET on SHOWTIME, shot live from the T-Mobile Arena in Las Vegas.