Shrek got his prince at the Royal Gala for the latest movie-turned-musical.
Shrek The Musical opens next week at the Royal Theatre in London, but Prince Charles got a preview of the show, whose proceeds are going to The Prince's Foundation For Children And The Arts.
Many of the productions on the West End were, like Shrek, originally successful films.
The Lion King has been running for over a decade and The Sound of Music, Billy Elliot and Ghost have all been hailed successes.
The formula doesn't always work, though. Spiderman had many problems when it opened in America and didn't live up to the hype.
And Shrek itself had mixed reviews when it ran on Broadway.
However, the show has now been tweaked and Nigel Harman, Nigel Lindsay, Richard Blackwood and Amanda Holden have been cast to pull in the crowds.
Alistair Smith, deputy editor of The Stage newspaper told Sky News the reason so many shows take their lead from Hollywood is simple economics.
He said: "It's very expensive to put a musical on in the West End - we're talking millions of pounds, and you want to make that as safe as possible.
"There are a number of ways of doing this. One is to have star names in it and the other is to have a brand that people already know."
Lindsay, who stars as Lord Farquaad, said the musical isn't just a replica of the film.
"It doesn't top the film but it takes the film and pushes it somewhere else, which I think is really exciting," he said.
Holden, who plays Princess Fiona, said: 'Nigel (Lindsay) said the best thing when we came into the theatre: 'The audience already loves us, so it's downhill from now!'"
The Royal Gala performance marks the beginning of an ongoing relationship between DreamWorks and The Prince's Foundation .
The producers will work closely with the charity to develop jointly a new educational project that aims to introduce young people to the art of musical theatre.
Jeremy Newton, chief exectutive of the foundation, said he was looking forward to a long partnership with the show.
"This is much more than just a single performance," he said.
"We will combine our knowledge and experience to run activities that will inspire, challenge and develop those children who have had very little access to the arts."
