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LOS ANGELES, CA - JUNE 28: Professional boxer Floyd Mayweather, Jr. (L) and recording artist Rihanna (holding a piece of duct tape) attend the 2015 BET Awards at the Microsoft Theater on June 28, 2015 in Los Angeles, California. (Photo by Christopher Polk/BET/Getty Images for BET)

LOS ANGELES, CA - JUNE 28:  Professional boxer Floyd Mayweather, Jr. (L) and recording artist Rihanna (holding a piece of duct tape) attend the 2015 BET Awards at the Microsoft Theater on June 28, 2015 in Los Angeles, California.  (Photo by Christopher Polk/BET/Getty Images for BET)