A girl can dream: Justin Bieber was walking with his girlfriend on the shore of Malibu when he heard his hit, “One Less Lonely Girl” playing karaoke-style from nearby. The Biebs decided to make his presence known (can’t you just picture this: his ears perk up; hey, that’s my song!) and turned an everyday Joe (actually Rob and Jeanine McCool)’s wedding into a celebrity-fueled-party-to-remember.

Some people are buzzing that this run-in wasn’t as random as we’d like to believe, that Justin knew the couple from a prior Ellen taping, but let’s pretend this could happen in the real world? Who would you want to crash your wedding?

I think my husband would pick Phish’s Trey Anastasio if we could play the time machine game, because he spent the summer before we met touring with the band (but not with the band).

Either way, make your dream wedding crasher list, your play list and everyone will rock out whether or not KISS comes to the door. Don't forget that if you really want a "celebrity appearance" GigMasters has tons of celebrity impersonators. To find the right one for you, or to find other ideas to turn your wedding into a party to remember, visit our wedding guide.