Taylor Swift made a surprise appearance at an NFL game
The game was between the Los Angeles Rams and the Arizona Cardinal
Swift performed a medley of her hits during halftime
She also performed her new single, 'Wildest Dreams (Taylor's Version)'
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Swift's appearance was part of the NFL's 'Sundays are for Football' campaign
The campaign aims to bring together football and music fan
Swift's appearance was met with excitement from fans on social media
The Rams won the game 37-20