Rapper Sean “Diddy” Combs is doubling down his bet with actor Mark Wahlberg

Demi Lovato has signed on to sign the National Anthem during the upcoming Showtime Pay Per View (PPV) matchup between pound-for-pound boxing king Floyd “Money” Mayweather and UFC champion “The Notorious” Conor McGregor. The event happens Saturday night, August 26th at 9 pm ET/6 pm PT at T-Mobile Arena in Las Vegas.

Lovato is a Grammy nominated artist with over six billion global single streams and nine platinum and multi-platinum singles to her name. She recently released “Sorry Not Sorry,” which has quickly become one of 2017’s biggest hits.

Rapper Sean “Diddy” Combs and actor Mark Wahlberg are doubling down on matchup. Showtime Sports has released a new video where superstars Combs and Wahlberg are following up on their previous Mayweather vs. Pacquiao wager. This time they are going double-or-nothing, with Combs betting again on Mayweather and Wahlberg putting his money down on McGregor. See the video below.

Floyd Mayweather vs. Conor McGregor is a 12-round, super welterweight matchup that pits the legendary boxer Mayweather against the all-time MMA great McGregor in the main event of an unprecedented four-fight pay-per-view boxing card. The event is produced and distributed live by Showtime PPV and promoted by Mayweather Promotions. The telecast also will be available in Spanish using secondary audio programming (SAP).