Saturday Night Live has been bringing laughs to America for 40 years now, and in celebration of the popular sketch show’s big milestone, the entire cast, past and present, gathered for a celebration.

Legendary alumni members we all know and love came back to the SNL stage for a huge reunion, along with some of today’s biggest stars who have hosted and performed on the show over the years. The 40th show brought out the best of the best, including Eddie Murphy, Chris Rock, Adam Sandler, and many more originals who made the sketch show a signature hit. Jimmy Fallon and Justin Timberlake gave the tribute a cold open, doing a musical number in honor of the show’s best sketches.

Taking the stage for a performance, Kanye West switched things up as he performed “Jesus Walks” upside down, as well as his new song “Only One,” and his newest track “Wolves” along with Sia and Vic Mensa. Spotted backstage was his wife Kim Kardashian, who hung out around some of the bigger names, such as Taylor Swift, Kerry Washington, Miley Cyrus, and many more.

See the gallery below to check out who all showed up for the big festivities, and some of the best reunions.