GETTIN' DOWN!!! TMZSports.com
It was Floyd Mayweather's big day, but all eyes were on his adorable little grandson, KJ ... who cut up the sand and even sparred with Grandpa at TBE's beach birthday party!
The All-White Beach Party went down Wednesday night at Joia Beach in Miami ... the first party of 8 planned for Mayweather's 48th birthday (which is officially on Monday).
Celebrating with the 50-0 boxing legend were Jacquees and Rotimi, who performed. Actor Lil Meech was also there, as was James McNair, Jona Rechnitz, and a bunch of other family and friends.