Actors Mark Hamill and Carrie Fisher have been told they’ll have to go on a diet before Star Wars: Episode 7 begins shooting.

Producers are said to be hoping for the actors to closely resemble older versions of their characters Luke Skywalker and Princess Leia, according to The Sun.

Hamill, 61, and Fisher, 56, will apparently be given their own nutritionist and personal trainer before filming starts at the end of 2013.

“Mark and Carrie need to be as close to their appearance in the earlier movies as possible,” a source claimed. “Producers are keen to help out and have offered support. The budget is huge, so there will be no expense spared.”

require the same treatment, as producers are said to be happy with his current physique.

JJ Abrams will direct the upcoming seventh installment of the sci-fi franchise, after George Lucas sold the rights to Disney last year.

Fisher recently said of Star Wars being bought by Disney and the planned new movie trilogy: “I’m glad they are doing a new movie because they are sending a trainer to my house so I can get in really good shape. So I’m really eating a lot of sugar in advance, as you can see. By the time I really get down to it I will have eaten everything.”