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MTV News reports on Thursday night's star-studded 40th birthday celebration at The Plaza Hotel in New York City. The guest list included Trey Songz, Tyrese, Red Cafe, Andre Harrell, F. Gary Gray. Jay-Z, Young Jeezy, Rick Ross, Kim Kardashian, Martha Stewart, Gayle King, Jimmy Fallon, Bell Biv DeVoe, Jimmy Iovine, Bono, Russell Simmons, Nelly, Estelle, Herbie Hancock, Regina King, Malcolm Jamal Warner, Kid Capri, Al Green, Spike Lee, Cassie, Dawn Richard, Kalenna, Lupe Fiasco, Sean Garrett, Rev. Al Sharpton, Dennis L.A. Green, Derek Hough and Shannon Elizabeth, as well as Diddy's mother, Janice Combs; sons, Quincy, Justin and Christian and Justin's mother, Misa Hylton-Brim. DJ Cassidy, D-Nice and Q-Tip provided DJ service. MTV News has quotes from attendees and photos.

Here are some clips inside the ballroom:




Attendees pass along their well wishes:


Al Green performs:


Diddy thanks everyone, Harrell provides a toast and Diddy and sons blow out the candles: