Taylor Swift's wedding reception apparently came with a Beatle. People reports that Paul McCartney, 84, took the stage at Swift and Travis Kelce's star-filled celebration at Madison Square Garden on Friday and performed the Beatles' breakout hit "I Want to Hold Your Hand." A source tells the outlet that after the ceremony, Swift's mother, Andrea, ushered guests into a reception space with a full stage set up, where McCartney and longtime Swift mentor Stevie Nicks both performed.