updated 05/06/2012 AT 9:00 AM ET
•originally published 05/06/2012 AT 10:30 AM ET
Who knew Justin Bieber and boxing were such a winning combination?
The pop star, 18, not only attended Floyd Mayweather’s title fight at the Las Vegas MGM Grand on Saturday, but Bieber also escorted the former Dancing with the Stars contestant into the ring while carrying two of the boxer’s championship belts.
Bieber’s appearance came as a surprise to those in the arena, though perhaps fans should have suspected something was up after the “Boyfriend” singer Tweeted earlier in the day, “cinco de mayo… #MayweatherCotto yeah @floydmayweather today is a BIG day.”