The Shake It Off hitmaker, 33, and her new friend, 28, were caught on camera joyfully celebrating the Chiefs first touchdown against the Los Angeles Chargers on Sunday - with a secret handshake.
Brittany Mahomes was ever the doting mom on Sunday, as she brought her two kids to cheer on husband Patrick Mahomes alongside new gal pal Taylor Swift.
The 27-year-old two-time Super Bowl-winning NFL player shared a series of photos of his family to his Instagram Story to celebrate the personal trainer and mother of his children, 27.