Revealing mistake: When they are all in the camper van Tiffany gives Chucky a biscuit then walks away from him, from the way she gave him the plate, they would have all fallen off. (01:07:35)

Bride of Chucky (1998)
Plot summary
Directed by: Ronny Yu
Starring: Brad Dourif, Katherine Heigl, Jennifer Tilly, John Ritter, Alexis Arquette, Nick Stabile
Tiffany, Chuckys girlfriend collects chucky's remains from an evidance locker and ressurects him. Tiffany then finds out that Chucky didn't really want to Marry her and she locks him up. Chucky kills her and channels her spirit into a doll. Chuck is determined to get back into a human body and so wants to get the talismen form his grave. So Tiffany calls Jesse, her neighbour and give him $1,000 to deliver the two dolls to Chucky's Grave. Meanwhile, Jesse and Jade are running away to be together when Chucky and Tiffany take a lift; killing a cop, Jade's Step dad, thier friend David, Two people in a Campervan and a honeymooning couple. Jade and Jesse both think that each other is killing the people until they realise that the dolls in the car are doing it.
James McManus
Damien: Come on, let me in or I'm likely to catch my death out here.
Tiffany: Promises, promises.
Trivia: The decision to turn the Child's Play/Chucky franchise from a slasher-horror to a dark comedy series was inspired by several factors. In addition to 1996's meta horror-satire "Scream" making self-aware horror-comedies popular, series creator Don Mancini also felt that by the time "Child's Play 3" had come out, Chucky had become such a pop culture icon, he might never be properly "scary" ever again, since people were too familiar with him. And thus, in order to keep the series fresh, he and producer David Kirshner decided to make the fourth film more comedic and self-aware in tone.





Answer: As specified in Seed of Chucky it's a voodoo pregnancy. That's why the pregnancy last shorter than a normal one.
Mortug