The Celtics and Knicks series is shaping up to be an exciting one -- and, it brought out some of the biggest stars in the world to Madison Square Garden.
Game 3 of the Eastern Conference Semifinals took place Saturday in New York City ... and, Timothée Chalamet made his presence felt at the arena -- appearing at the game just days after making his red carpet debut with Kylie Jenner in Rome.
Chalamet sat courtside .