Spotted by fans in the stands, Swift’s British beau, 27, kept incognito in a baseball cap, denim jacket and white T-shirt.
While singing her hit song “Gorgeous” — which is rumored to have been inspired by Alwyn — Swift seemingly gave her boyfriend a cute shout-out when she pointed to him in the crowd. According to fans in attendance, Alwyn proudly recorded his girlfriend during the song.
Ahead of her opening night performance, a source told PEOPLE exclusively Alwyn will be joining Swift on tour when he can, adding that the singer, 28, is “still very happy with Joe.” The couple have been quietly dating for more than a year.
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Camila Cabello and Charli XCX opened for Swift, who performed a total of 24 hits throughout the night. Her set list included nearly all the songs off her latest album reputation and fan favorites like “All Too Well” off her Red album and “Shake It Off” and “Style” off her 1989 album.
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“Taylor couldn’t be more excited about the tour. She has been rehearsing nonstop and perfecting everything. She can’t stop talking about it. It’s so fun to see her this happy and excited,” said the source.
Swift’s Reputation Stadium Tour will see her play dates across North America, Europe and Oceania through November.