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Kansas City Chiefs football is officially back ... but the team will be missing its most popular fixture for the 2025 season kickoff in Brazil -- Taylor Swift .

TMZ has confirmed the superstar will be notably absent tonight when her fiancé's team takes on the Los Angeles Chargers at Neo Química Arena in São Paulo. Play video content

Sources tell TMZ ... it's not a shocker Taylor skipped the international game ... since none of the WAGs made the trip. It's just a 2-day jaunt leaving no time for the fams to intermingle. Plus, it's safe to assume security for Taylor played a role in the decision-making.

Still, it's a pretty big deal ... since it's the first game since she and Travis Kelce damn-near broke the internet when they announced their engagement last month.

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