So Taylor Swift & Prince William Joined Jon Bon Jovi On Stage the Other Night...

The future king rocked out with the pop stars at a charity event in London!

So Prince William is a Bon Jovi fan. Who knew?!

During a charity event in London last night, performer Taylor Swift and the future king of England joined Jon Bon Jovi onstage for a rendition of "Livin' On a Prayer." And it is every bit as delightful as you can imagine. Take a look!

While Swift is her usual bubbly self -- dancing like she’s doing karaoke with her girlfriends, even in an elegant gown -- Prince William remains reserved. At least until the chorus, that is, when the new daddy starts belting out the lyrics and encourages the 200-person audience at the Winter White Gala to join in.

Best impromptu sing-along ever!

Amber Ray is the Deputy Entertainment Editor at iVillage. Find her on Google+ and Twitter.

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