Taylor Swift Performs 'Look What You Made Me Do,' 'Delicate' & More at Biggest Weekend: Watch

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Taylor Swift performs onstage during Taylor Swift reputation Stadium Tour at Levi's Stadium on May 12, 2018 in Santa Clara, Calif.

Taylor Swift took the stage at BBC Radio 1's Biggest Weekend in Swansea Sunday (May 27), bringing several of her hits to the U.K. festival crowd.

After performing at the fest, she admitted backstage that she had been "a tiny bit nervous." (She also insisted "I'm not worth it!" when she was told her performance bumped Antiques Roadshow off of the BBC schedule.)

"We pretty much had no time to rehearse for this ... This was kind of like, on the fly," Swift, who had just flown in from Denver in the midst of her Reputation Stadium Tour, said. Although she's on tour, her festival set was a very abbreviated version of her live show.

Swift's full setlist:

1. ...Ready for It?

2. Gorgeous

3. Look What You Made Me Do

4. Delicate (Acoustic)

5. Shake It Off

Watch her perform "Gorgeous" below.