Paul McCartney, Jimmy Fallon & Taylor Swift Sing “Shake It Off” at SNL After-Party

After a pretty amazing *live*E special celebrating forty years of Saturday Night Live on NBC, some of the best action took place at the after-parties!

Can you imagine being in the room seeing Sir Paul & Jimmy Fallon jamming with Taylor Swift? Wish I’d been there … check it out below!

One favorite moment from the #SNL40th afterparty…@taylorswift jumps on stage (and does a number without being produced and rehearsed) along with @jimmyfallon and Sir Paul. I love a woman who is not only a performer, but also a musician. I so appreciate people who have the skills to write/play/sing as well as perform. Miley Cyrus, Blondie, The B52’s, and Prince also performed. Video by ???? @djcassidy ????

A video posted by Jessica Seinfeld (@jessseinfeld) on Feb 16, 2015 at 5:11am PST