Doctor Who: Ranking The Weddings Of The Whoniverse
3. Gwen Cooper And Rhys Williams (Something Borrowed)
Gwen Cooper's wedding day gets off to a rather rocky start when she wakes up to find herself having been somehow impregnated with a baby Nostrovite, a kind of shape-shifting alien that eats living flesh. While her fiance' Rhys would rather postpone the Wedding until the situation is resolved, Gwen insists on forging ahead.
In true Torchwood fashion, things predictably spiral out of control when the Mother Nostrovite infiltrates the Wedding disguised as a guest, with plans to tear Gwen open and retrieve its baby. Thankfully, with help from the Torchwood team, the situation is resolved, and Gwen and Rhys are able to marry as planned.
Though, every guest is dosed with Retcon, so no-one bar the Torchwood team remember the events of the day. We'll just play it off as everyone got a bit too drunk at the reception, eh?