You occasionally get the odd uninvited guest at a wedding - usually in soaps.
But a reception in the Chinese city of Shenzhen took this to a whole new level – when a groom's pregnant mistress showed up...wearing a wedding dress...and then starting a punch-up!
Awkward? To say the least.
The uninvited guest, who was reportedly drunk, wrestled the bride to the ground as the groom attempted to pull them apart.
"You didn't have an abortion while you could and now you come here with your big stomach," the bride apparently shouts at the woman in the video.
"How do I know whose kid it is? Are you trying to coerce us into buying you a house? Can we afford it?"
At least the, er, happy couple won't have to worry about their wedding video – they can keep watching it on YouTube, where it has so far been viewed more than 200,000 times!