Pound-for-pound king Mayweather does not look impressed as he stares at Rihanna

Shutting Floyd Mayweather up is not easy. But pop star Rihanna did her best to keep the Money Man quiet as the pair sat next to one another at the BET Awards on Sunday night.

R&B star Rihanna had to resort to drastic measures to stop the pound-for-pound king running his mouth off during the ceremony as she stuck a piece of duct tape across his face.

The awards, held at the Microsoft Theatre in Los Angeles, California, were established by the Black Entertainment Television Network and celebrate African Americans and other minorities in music, acting, sports, and other fields of entertainment.

Floyd Mayweather and Rihanna attended the BET Awards in Los Angeles, California on Sunday night

Floyd Mayweather and Rihanna attended the BET Awards in Los Angeles, California on Sunday night

R&B artist Rihanna was wearing a roll of duck tape around her wrist as a bracelet during the ceremony

R&B artist Rihanna was wearing a roll of duck tape around her wrist as a bracelet during the ceremony

The singer had clearly heard enough from Mayweather as she stuck a strip of duct tape over his mouth

The singer had clearly heard enough from Mayweather as she stuck a strip of duct tape over his mouth

Rihanna, 25, from Barbados, gets ready to shut undefeated boxer Mayweather up at the Microsoft Theatre

Rihanna, 25, from Barbados, gets ready to shut undefeated boxer Mayweather up at the Microsoft Theatre

Mayweather was nominated for Sportsman of the Year while Rihanna was up for Best Female R&B/Pop Artist

Mayweather was nominated for Sportsman of the Year while Rihanna was up for Best Female R&B/Pop Artist

Rihanna sticks Mayweather's mouth shut with the duct tape to the amusement of the people sat next to them

Rihanna sticks Mayweather's mouth shut with the duct tape to the amusement of the people sat next to them

Pound-for-pound king Mayweather does not look impressed as he stares at Rihanna

Pound-for-pound king Mayweather does not look impressed as he stares at Rihanna

Undefeated American Mayweather, who took his professional boxing record to 48-0 when he beat Manny Pacquiao in their Fight of the Century bout on May 2 in Las Vegas, was nominated for Sportsman of the Year.

But he was beaten to the prize by Golden State Warriors point guard Stephen Curry, who was named the NBA's Most Valuable Player last season.

Rihanna, who was wearing the roll of silver duct tape as a bracelet, was up for Best Female R&B/Pop Artist but was pipped to the the award by Beyonce.

Serena Williams, who begins her assault on Wimbledon on Monday at SW19, was named Sportswoman of the Year but, for obvious reasons, was not in attendance on Sunday.

The 33-year-old is bidding to keep her season of Grand Slams on track after winning both the Australian and French Opens earlier this year.

Mayweather was beaten to the award of Sportsman of the Year by Golden State Warriors' Stephen Curry
Mayweather poses for a snap during the awards ceremony on Sunday

Mayweather was beaten to the award of Sportsman of the Year by Golden State Warriors' Stephen Curry

Rihanna speaks during the BET Awards but lost out to Beyonce for title of Best Female R&B/Pop Artist

Rihanna speaks during the BET Awards but lost out to Beyonce for title of Best Female R&B/Pop Artist

The pop star showed plenty of cleavage during awards that celebrate African Americans and other minorities

The pop star showed plenty of cleavage during awards that celebrate African Americans and other minorities