Diana Ross' 75th birthday celebration was a star studded event!
Everyone from Diddy, The Kardashians to French Montana and more was in attendance.
When it came time to cut the cake, the event's host called none other than Beyonce to the mic.
Beyoncé wore a black dress with a pulled back, long braided hairdo as she sings a stripped-down version of the birthday song to Ross.
What caught a lot of attention was the respect Beyonce showed by calling the fellow singer 'Ms. Ross' versus 'Diana.'
Would you like Bey to sing you Happy Birthday? Tell us below in the comments.