Paul Rudd was supposed to appear as a love interest for Annie, but his scene ended up on the cutting room floor.
In order to distinguish Bridesmaids from The Hangover, all Vegas scenes were removed from the film.
The film's iconic diarrhoea scene was largely Judd Apatow's idea, and not Kristen or Annie's suggestion.
Jon Hamm went uncredited for his appearance in the film – and it was his suggestion!
Six members of the movie's cast were a part of the LA improvisational comedy troupe, The Groundlings.
Rose Byrne had to learn Thai for her engagement party speech.
Annie wears a bra to bed with Ted, but not with Officer Rhodes to signify how she feels about both men.
The location where the infamous bridal shower takes place is also bloody Wayne Manor!
Jill Clayburgh, who played Annie's mum, never got to see the final film.