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Watch Taylor Swift Destroy The 'SNL40' After Party

3.5 hours was just the beginning.

As much as we wish we were, maybe even fibbed and said we were, we were not at the "SNL40" after party at the Plaza Hotel in New York City.

But did we mention Taylor Swift was there? And PERFORMED? Peak FOMO has been reached.

After three and a half hours of A-listers in Black Tie regalia crammed into Studio 8H watching classic sketches for the 40th Anniversary Special of "Saturday Night Live," everyone needed a drink. To the Plaza Hotel they went. And like we said we were not there, but as social media's main appeal is its jealousy-enducing tendencies, it was well documented. And we creeped on all of it.

First, TSwift had help from the likes of Paul McCartney, Jimmy Fallon and Dan Aykroyd on the Beatles' tune "I Saw Her Standing There."

And don't forget SIR Paul.

Then she put on a little bit of her own jams with "Shake It Off."

Then Ariana Grande, Miley Cyrus and Debbie Harry sang Blondie tunes. (Why has a reliable source not surfaced video of this yet?!?!)

Bonus: Pete Davidson took some time out for a picture with LEONARDO DICAPRIO.

And returning to the music we're throwing it back to "Loveshack" and the B52's.

Yep, officially dead/jealous/oversaturated with envy.