Remember that one time Taylor Swift got on stage and sang "Living on a Prayer" with Prince William and Jon Bon Jovi ? Of course you do, how could you forget?! Her royally epic karaoke night was one of the talking points during her appearance on The Graham Norton Show recently, when the show host brought up how the singer was part of what may be one of the "poshest sing-alongs" of all time. And we, along with Taylor, would have to agree. "Yeah, it was insane, and I was very nervous for the whole thing because it was at Kensington Palace and it was my first, sort of, royal encounter of sorts," Taylor explained in the clip exclusively obtained by E! News. "Jon Bon Jovi was on stage and he was about to sing 'Living on a Prayer' and he kinda pointed to Prince William and said something like, 'I hear you like to do this at karaoke night, karaoke boy." Dominic Lipinski - WPA Pool/Getty Images She c...