Taylor Swift Was 'In an Amazing Mood' at Pal's Party This Weekend!

Taylor Swift steps out of her car and makes her way inside the gym on Monday morning (August 8) in New York City.

The 26-year-old entertainer partied over the weekend in the Hamptons at her pal’s birthday party, and hit the stage with Nelly for a surprise performance!

“Taylor was in an amazing mood, and super fun all night. She danced her ass off. At first she didn’t want to perform but then Nelly asked her. Everyone was super into it, the crowd loved it,” an insider told E! News about the performance.

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