Prince William celebrated his birthday by taking his children to see Taylor Swift perform at Wembley. The Prince of Wales was spotted doing his best dad dance moves at the concert as he celebrated his 42nd birthday amid a crowd of Swifties. Footage captured by a fellow fan shows the future King, dressed casually in a buttoned-down shirt, getting into the music whilst Swift’s 2014 hit Shake it Off played. The post adds: “Prince William being a 1989 girlie is taking me OUT.” Other royal fans praised William for his dance moves, one wrote: “Loving the enthusiasm! Taylor really is for everyone. Ha…