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This Taylor Swift-Nick Jonas Time Warp Will Melt Your Mind

These two go way back.

Taylor Swift claims that when Nick Jonas joined her onstage Saturday night, New Jersey's MetLife Stadium erupted with screams. But if you think about how far the two go back, you'll be even more giddy.

While Jonas was the guest at her 1989 World Tour stop in East Rutherford this weekend, fans might remember that Nick -- and his Jonas Brothers -- invited Taylor to perform with them in Anaheim in 2008. The performance was the part of the taping of their "Jonas Brothers: The 3D Concert Experience." That was seven years ago -- when Taylor was 18 and Nick was 15.

Taylor shared a snap from the retro performance on Sunday night, inciting squeals and smiles all around. Wook at how wittle!

Not only did Nick come out and sing "Jealous" with Taylor, but she also brought out Uzo Aduba from "Orange Is The New Black" and her model friends. Uzo, a.k.a. "Crazy Eyes," strutted down the runway with model Karlie Kloss and joined some of Swift's Victoria's Secret buddies, including Candice Swanepoel, Martha Hunt, Lily Aldridge, Behati Prinsloo and Gigi Hadid, who is now dating Nick's brother Joe Jonas (who also happens to be Taylor's ex from their teenage romance).

Along with joining The Jonas Brothers in concert in 2008, Taylor also interviewed them at the 2008 MTV Video Music Awards on the red carpet.

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And they rang in 2009 together during "Dick Clark's New Year's Rockin' Eve."

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Now look how far they've come!

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