Four people were shot after Justin Bieber's concert Friday night ... right in front of a slew of celebs.
Bieber had performed in WeHo at the Pacific Design Center and had an afterparty nearby at The Nice Guy. The guest list included Drake, Leo DiCaprio, Tobey Maguire, Kendall Jenner and Khloe Kardashian.
At around 2:45 AM, as Kodak Black, Gunna and Lil Baby were standing on the street, smiling and talking, a fight broke out. Kodak took a swing at someone and then .