What do you get man who has everything for his birthday? The Blast has learned JB attended the 38th birthday party for his longtime manager,Scooter Braun, which went down at the posh San Vicente Bungalows in West Hollywood.Along with Bieber, the party was attended by Scooter's other famous friends, likeUsher,Katy PerryandAshton Kutcher. Scooter's wife, Yael, also attended. Check it out!