Guess the Celeb Odd Couple!

Whom did Justin Bieber join in the boxing ring? Which director had dinner with Lindsay Lohan? Single out the random celebrity friends!

Correct Answer: Floyd Mayweather

The pop star joined Mayweather's entourage inside the Las Vegas MGM Grand, where he escorted the boxing champ into the ring carrying two of Mayweather's belts. "Congrats champ. Glad I could be a part of it," Bieber Tweeted to his boxer pal after his victory over Miguel Cotto in May.