Scott Swift swapped Eagles-green for Chiefs-red to support daughter Taylor Swift’s boyfriend Travis Kelce on Sunday!

The pop star’s father — a longtime Philadelphia Eagles fan — was spotted watching Travis, 34, and the Kansas City Chiefs take on the New England Patriots with his daughter on Sunday afternoon.

The father-daughter duo were spotted hugging, cheering together and chatting with Brittany Mahomes — Taylor’s pal and the wife of Chiefs quarterback Patrick Mahomes — at the Chiefs-Patriots matchup at Gillette Stadium in Foxborough, Massachusetts.

Taylor Swift Shows Her Support for Travis Kelce by Attending the Chiefs vs. Patriots Game in Mass.Taylor and Scott Swift cheered on Travis Kelce and the Kansas City Chiefs at Gillette Stadium on Dec. 17.

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Scott showed his allegiance in a red crewneck that appeared to be from the bundle of vintage Chiefs sweatshirts Taylor, 34, was gifted by Kansas City retailer Westside Storey.

To cheer on her tight end boyfriend — and keep cozy in the chilly New England weather — Taylor wore a gray Chiefs crewneck, and complemented the look with her signature red lip.

She also wore a white, hand-knit cap with a red stripe, pom pom and embroidered “87” — Travis’ uniform number — detail, which was made for her by Kut the Knit, per the store’s Instagram account.

Brittany Mahomes, Taylor Swift and Scott Swift at the Kansas City Chiefs game on Dec. 17.

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The Swifts were also joined by several of Swift’s pals: Alana Haim, fashion consultant Ashley Avignone and one of her longtime back up singers, Melanie Nyema, all of whom also donned Chiefs-red for the occasion.

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Scott met Travis for the first time last month in Buenos Aires, Argentina, when the NFL star took a weekend trip to watch one of the “Karma” singer’s Eras Tour performances.

After the pair met, Travis’ brother, Eagles center Jason Kelce, teased Scott on the football players’ podcast, New Heights with Jason and Travis Kelce, for abandoning the Eagles to support his daughter’s new beau.

Taylor and Scott Swift watched the Kansas City Chiefs game together on Dec. 17.

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In the podcast episode, Jason, 36, pointed out that Scott donned a Chiefs lanyard to watch his daughter on stage in Buenos Aires with Travis, prompting the tight end to joke that he’s “got ‘em all over here to the good side, baby” — a reference to the Swift family’s former allegiance to Jason’s team.

“What are we doing, Scott?” the center said, as Travis continued, “Just one by one, getting all the good ones to come on over.”

Ignoring his brother, Jason pushed back, addressing Scott directly: “You’re gonna let this man’s devilishly good looks and relationship with your daughter sway you from a lifetime of fandom, Scott? This is ridiculous.”

Travis Kelce and Taylor Swift’s dad, Scott Swift.

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Travis also hinted that it took a bit of convincing to get Scott to wear the lanyard.

“Aw man, I might have persuaded him at dinner the night before when I met him,” the tight end shared, to which Jason replied, “No! Did you?”

“Maybe… who knows?” Travis joked before adding that his girlfriend’s dad — who played college football in Hawaii and in Delaware — is “a huge football guy.”

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Elsewhere in the New Heights episode, Jason also called out his brother for not returning a high-five from Scott after Taylor changed the lyrics of “Karma” to give her football star beau a shoutout.

“Yeah, Mr. Swift, I apologize big guy,” Travis said. “Aw, man. I missed that. I never miss a high-five, too. Big high-five guy. It’s the most electric thing you can do at an event and so — sorry Mr. Swift.”