Bon Jovi, Taylor Swift and Prince William Sing ‘Livin’ on a Prayer’

This is one rather unexpected group performance!  As part of a London fundraiser for the homeless that took place at Kensington Palace yesterday, Taylor Swift (the Queen of Country), and Prince William (the Prince of....um....William-ness) joined Bon Jovi for an acoustic performance of his monster hit "Livin' on a Prayer."