After his win over Shane Mosley Saturday night, Floyd Mayweather celebrated at his official after-fight party in the MGM Grand’s Studio 54. Mayweather was all smiles as throngs of fans went wild, screaming and chanting “champion.” Floyd mingled with fans as he made his way around the iconic nightclub. Traveling with an entourage 30 deep, Mayweather took a moment to ‘two-step’ on his way to the exclusive VIP lounge. Resident DJ Clue shouted, “This is for you Floyd!” and played DJ Khaled’s “All I Do is Win” while the crowd toasted. Among those in attendance was former world champion Zab Judah.