By 
The third Bridget Jones movie has three different endings - and not even the cast know which one will be used.
The identity of the father of Bridget's child in Bridget Jones's Baby will be kept under wraps, as well as who Renee Zellweger's character ends up with, until the film's premiere.
"It's kind of brilliant. None of the cast knows who fathered Bridget's baby or who she'll choose as her beau," Zellweger told the Sunday Express.
"The plan is to keep us all in the dark, right up to the premiere."
The actress added to Entertainment Weekly that fans will see a slightly different Bridget in the movie, but some things - such as her uncanny ability to make an embarrassing situation worse - will remain the same.
"This is part of the challenge, discovering where she is in her new life. She's a bit more mature and has moved on, as we all have.
"[But] all of us do things in our personalities that we don't outgrow.
"I like that she tells what it's like to be a woman in these really relatable situations. It's so right to tell a story about Bridget in this stage of her life."
Bridget Jones's Baby also stars Colin Firth and Patrick Dempsey.
