One of the commentators for the Fox Sports game saw Swift in the crowd with Kelce's mother and said the crowd seemed to be having a good time in her suite.
Swift's performance may have garnered social media attention, but it did nothing to make the game more competitive or entertaining as the Chiefs defeated the visiting Bears 41-10.
Speculation about Swift, 33, and two-time Super Bowl champion Kelce began when they took part in the Eras Tour this summer. Kelce joked on a podcast that his brother, Jason Kelce of the Philadelphia Eagles, tried to give him a friendship bracelet with his number on it.