Taylor Swift is known for her intense, emotional reactions to musical performances, ex-boyfriends and even to whom her friends date.

Sunday night at the MTV Video Music Awards, Swift, 23, did not disappoint. The "22? singer got wrapped up in the *NSYNC reunion and let loose as Justin Timberlake performed "Bye Bye Bye" with his former bandmates.

Swift's enthusiasm continued as JT went solo, performing "Cry Me a River" and new hits such as "Mirrors."

It's your world Taylor, the rest of us are just trying to live in it.

Here's a look at Swift's best from Sunday night:

(Photo Credit: MTV)

It's happening! Taylor getting pumped for Timberlake and *NSYNC to hit the stage.

(Photo Credit: MTV)

Swift just jamming out with bestie Selena Gomez.

(Photo Credit: MTV)

Sorry JT, Taylor will be on her "Suit & Tie."

(Photo Credit: MTV)

Let's let Swift show *NSYNC a few things about love.

(Photo Credit: MTV)

Taylor leading the applause for JT and *NSYNC! "Stand up guys!"

(Photo Credit: MTV)

Finally, Taylor can't contain the excitement as Gomez wins Best Pop Video. BFFs!