AJ McLean would now like to go by Alex ... fans will recall in 2001 when his four bandmates went on “Total Request Live” with Carson Daly and announced that McLean was entering rehab.

ET was with Joey Fatone and AJ McLean as they reflected on their time in *NYSYC and shared their newest ventures. Fatone made the revelation during an interview on Audacy's 96.5 WTIC-FM.

On Saturday, Joey Fatone of NSYNC and AJ McLean of The Backstreet Boys will perform together at Agua Caliente Resort Casino Spa in Rancho Mirage. If you go: 8 p.m. Saturday, Agua Caliente Resort ...