On Monday night, Prince William hosted the Winter Whites Gala in aid of youth homelessness charity Centrepoint.
The highlight of the event was a concert headlined by Jon Bon Jovi and Taylor Swift (the first ever live concert at the palace).
"I'm absolutely excited. I don't think I've ever played at a palace before so it is really wonderful," Swift gushed.
During Bon Jovi's final set, he encouraged the future king of England to come up on the stage and sing "Livin' On A Prayer" with him. Prince William agreed on the condition that Swift join in as well.
