The New York Knicks pulled off one of the most jaw-dropping comebacks in NBA history — and the celebrity crowd at Madison Square Garden lost their minds.

Timothée Chalamet was dancing through the MSG hallways with Ben Stiller and jubilant fans. When a reporter asked how he was feeling, he replied: "Beautiful." He then ripped off his shirt and celebrated with Knicks fans as girlfriend Kylie Jenner captured the moment on camera.

Taylor Swift couldn't contain her excitement after the Knicks stormed back from a 29-point deficit. Swift lingered courtside with the Haim sisters, embracing fans and waving the rally towel. She kept the celebration rolling postgame at a NYC club, according to TMZ.

The arena became an unlikely celebrity gathering. Mumford & Sons and Tate McRae partied together. Jerry Seinfeld and Larry David showed up notably enthusiastic. Rihanna was spotted shooting hoops in the city. The whole night felt less like a basketball game and more like an exclusive victory celebration.

The Knicks won Game 4.