Taylor Swift: Duet with Selena Gomez & James Taylor!

Taylor Swift hits the stage with BFF Selena Gomez at her final Speak Now tour date at Madison Square Garden on Tuesday night (November 22) in NYC.

Selena, 19, surprised fans by joining Taylor, 21, on stage and the two sang Selena‘s “Who Says” – the first time the pals have ever performed together!

Rock & Roll Hall of Famer James Taylor also showed up and sang “Fire and Rain” with Taylor, who shared it was her favorite song in fifth grade chorus class.

“I have so much to be thankful for this year. I’m leaving New York, replaying this tour in my mind. I love you all so much,” Taylor tweeted, while Selena wrote, “Performing at Madison Square Garden with my best friend was a highlight.”

30+ pictures inside of Taylor, Selena and James…