Simone Biles has done it again -- she just earned her FIFTH Olympic gold medal ... and she did it all as around a dozen A-list celebs cheered her on.
The gymnastics GOAT -- alongside Suni Lee, Jordan Chiles and Jade Carey -- waxed the field inside of Bercy Arena on Tuesday afternoon in Paris ... beating out Italy and Brazil for first place in the team final.
Everyone from Serena Williams to Natalie Portman to Jason Kelce was inside the building to watch history go down .