The 'Twilight' franchise has a secret blooper reel that has never been released.

The romance fantasy film series was released between 2008 and 2012 and Jackson Rathbone - who played Jasper Hale - revealed that there is a clips compilation in the archives that shows lead actress Kristen Stewart dropping a string of expletives.

He told Collider: "There was one time where they put out a special blooper screening--I think this is for 'Breaking Dawn' or 'Eclipse'--where it was just every time Kristen curses. It was like, when she's messing up her lines… It's like eight minutes long. It is amazing."

Meanwhile, actress Ashley Greene - who played Alice Cullen - revealed that she and co-star Peter Facinelli "got into trouble" for messing with a lifesize doll that was meant to be a version of Kristen's character Bella Swan.

She said: "Peter and I also got in trouble for playing with a life-sized doll of a dead Bella."

Peter added: "They were shooting on stage, and we had to wait until their scene was over, but then all of a sudden I bumped into this table, and there's a life-sized Kristen Stewart laying on the table. "They made a doll for when she breaks her back. It looked exactly like her, so I bumped into it and I was like, 'Sorry, Kristen."

The 'Twilight' franchise - which was based on the books by Stephanie Meyer and also starred Robert Pattinson as well as Taylor Lautner - made a star out of Kristen, 34, but she previously admitted that she was "shocked" by the success of the whole thing.

She said on the 'Jess Cagle Podcast': "I always want to remind people that [the first 'Twilight' movie was technically an indie] without diminishing it, or being like 'it was nothing!'

"We just did not know. And it was kind of like an oddball, slightly marginal teen movie. I didn't think everyone was going to take to that. I didn't think we were going to make a sequel."