MTO EXCLUSIVE: We Have Pics And Video From R&B Singer Usher’s 39th BIRTHDAY PARTY Yesterday . . . And TONS Of Celebrities Were There!!!

: Usher Raymond turned 39 years old yesterday – and he had a star-studded birthday party in Los Angeles at the World Of Wheels roller skating rink. Everyone was there. Look:

Stevie Wonder


Jermaine Dupri:

L.A. Reid: