What would you do if a queen showed up at your wedding? And how would you react if you were throwing a birthday party for your child and a celeb crashed it?
These might seem like pretty unlikely scenarios, but all of the above did happen. As it turns out, some celebrities do like to walk into weddings, parties, and other events, uninvited. And while most people are thrilled to have A-listers at their parties, others don't feel the same way.