Earlier this week, the pair were spotted at the Arthur Ashe Stadium in Queens, New York, rocking out the famous track from The Darkness.
Swift and Kelce rocked out to the song during the men's singles final at the annual tennis tournament. The US popstar donned a pair of dark sunglasses and red-and-white chequered sundress, while NFL star Kelce could be spotted wearing a Gucci bucket hat.
The couple sang and danced to The Darkness' 2003 tune. Este Haim of rock trio Haim was also spotted singing and dancing to the track in front of the couple in the suite.
Check out footage of this below.