The budding besties looked festive in color-coordinated red-and-black outfits for Sunday's game
Mahomes, 28, and Swift, 33, were all smiles as they cheered for the Kansas City Chiefs and their beaus — quarterback Patrick Mahomes and tight end Travis Kelce, respectively — on Sunday despite the team's loss to the Green Bay Packers.
And on Tuesday, the mom of two shared a new photo of the ladies inside their suite at the game.
The photo shows Swift, Brittany and their pal Lyndsay Bell, whose husband is Kansas City tight end Blake Bell, standing in their suite as they rocked color-coordinated red-and-black outfits.
Brittany wrote, "GAMEDAYS" in the caption of the post and included two heart emojis, one red and one black.
The mother-of-two added two other photos to the carousel in her post, giving fans an inside look at her gameday routine.
In the first slide, Brittany's Chiefs letterman jacket is front and center as she flips her blonde locks on the sidelines of the field before the game.
In the second slide, Brittany has her arms wrapped around Lyndsay as they pose together on the field.
"Best days," Lyndsay wrote in the comments of Brittany's post.
On Friday night, the trio got into the holiday spirit with their beaus at the Chiefs' annual holiday party in Kansas City.
In one photo, Brittany and Patrick, 28, are wearing matching reindeer onesies as they pose at a table surrounded by Christmas decorations.
The couple, who share a one-year-old son Patrick "Bronze" Lavon Mahomes III and daughter Sterling Skye, 2, completed their matching looks with antler headbands, and Brittany paired her onesie with a pair of Uggs while Patrick matched his to a pair of sneakers.
"Falalalalala," Brittany wrote in her caption, adding a Christmas tree emoji.
In a second photo Brittany posted on Instagram, she and Patrick posed with Lyndsay and Blake, who also sported matching looks for the festivities.
Kelce was spotted by Kansas City locals at the party, and news circulated online that Swift accompanied him to the team’s gathering.
In one photo, Swift was pictured chatting to Brittany, whose back was facing the camera.
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As photos circulated online, one Chiefs fan claimed on X (formerly Twitter) that the couple wore matching holiday sweaters, in line with the party’s theme, which featured a squirrel — a comical reference to one of Kelce's now-viral old tweets in which he misspelled the word.
The pop-up bar also reposted a series of photos on Facebook where a customer claimed that Swift was at the bar on Friday night at the same time as she was. “Hung out with Taylor Swift here last night and by hanging out I mean she was there and so were we,” the post’s caption said.
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