Taylor Swift's life as a showgirl involves a whole lotta football ... the star was in her usual box watching Travis Kelce's Chiefs take down the Indianpolis Colts.
The singer-songwriter watched the action from high above the Arrowhead Stadium field Sunday ... wearing cherry red lipstick in pics eager fans took of her.
The star was clearly focused on the action ... eyes forward with no grin on her face in this photo -- though many in the stadium were more interested in her than the main event.