Taylor Swift and Brittany Mahomes are seen REHEARSING their cringe-worthy handshake - as video shows popstar teaching her new pal moves, from a ferocious muscle flex to jazz hands | Daily Mail Online

In the clip, which was captured by an onlooker who sat below them at the game, the singer, 33, could be seen suggesting that the handshake include a fist pump, while they also tried out a spin.