Taylor Swift attended Travis Kelce's game today ... but, from FOX's broadcast and social media you'd hardly know it -- 'cause it looks like she snuck into the stadium!
While the singer-songwriter usually makes a splash when she shows up to Arrowhead Stadium to cheer on the Kansas City Chiefs, it seems no one got a good glimpse of her Sunday ... 'cause video of the star striding down the tunnel on her way to her suite didn't surface online.