Taylor Swift and fiancé Travis Kelce attended Patrick Mahomes‘ 29th birthday party following the Kansas City Chiefs’ first home game of the season on Sunday (September 14). The event was held at 1587 Prime, the steakhouse in Kansas City owned by Kelce and Mahomes, with country star Kane Brown sharing a group photo from the party on Instagram. Swift, dressed in a chic taupe and brown plaid two-piece set by Simkhai, joined Kelce, who wore a white shirt and navy Thom Browne suit shorts, alongside Mahomes and his wife Brittany, and Brown and his wife Katelyn. Brown captioned his post, “happy birthday Pat & congrats TT❤️ thanks for hosting us Britt 🙏🏽.” The couple, who announced their engagement on Instagram in August, enjoyed the celebration after Swift cheered on Kelce and the Chiefs during their game against the Philadelphia Eagles, a Super Bowl rematch that the Eagles won 20-17. Swift is preparing to release her highly-anticipated upcoming album, The Life of a Showgirl, which is set to drop on October 3. (People)