At the concert in Paris, she pointed out it was her 87th show, and that Travis's number is 87, so she gave a special shoutout to him (he was spotted at the tour) , but why exactly did he pick that number, if they're both born in 1989? Well, Kelce has an older brother named Jason Kelce who was born 2 years before him, and that he was born in 1987, so that's why he picked that number, but anyway let's get back to the topic. After the lucky one shoutout, she began to sing a mashup between 'Treacherous' and 'The Alchemy' from Red and Ttpd, and her fit for 1989 was Chiefs colors (Yellow and Red), but it could also be a coincidence, and don't forget that in Karma that she changed the original lyrics to, "The guy on the Chiefs," Which is obvious, it's about Travis, but we all know Taylor is a mastermind for hiding easter eggs.
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