A sequel to the Twins starring Arnold Schwarzenegger and Danny DeVito has been announced.

The original picture, released in 1988, starred Hollywood celebrities as long-lost twins who were separated at birth.

Now they want to up the ante by revealing that they are genuinely triplets, with Tracy Morgan playing the third brother.

"Twins was quite successful, and some years later, this whole thing started with Arnold meeting Eddie Murphy, and the suggestion came from one of them," director and producer Ivan Reitman told Deadline.

"It was something along the lines of, 'I should be a triplet, that could be a hilarious comedy.'" We started working on a story with Eddie, and after his success with Amazon Prime on Coming 2 America, he was highly scheduled.

"I'd known Tracy Morgan for a long time and always considered him to be one of the funniest men on the planet.

"I thought he'd make a fantastic triplet, so we completely rewrote the script for him." Now we'll go out and try to scrape together the funds to make it happen."

Ivan gave fans a sneak glance at the official plot of the movie.

"Secretly, there was a third baby born, a Black baby, who hasn't been in touch with his siblings," Reitman told Deadline.

"They don't know each other and meet very early in the film, and it's through this meeting that they form a bond after all these years." It's essentially a film about family and how we all have to learn to get along, no matter how different we are.

"These guys have great chemistry together, and you can see that in the reel and how much energy they bring out in each other."

Arnold has long expressed interest in making a sequel to the smash movie, telling LADbible in 2019 that he planned to reassemble the cast as soon as possible.

"For a long time, I've dreamed about doing a sequel to Twins called Triplets," he told us.

"But, wait a minute, how did that happen, two white guys, one black guy, what happened with the sperm, how many people were involved in this?" But it's amusing.”