Prince Harry and Meghan Markle will tie the knot when they marry at Windsor Castle this Saturday.

In the build-up to the big day, US TV channel Lifetime has released a movie chronicling their love story.

One particular scene shows Meghan (played by Paris Fitz-Henley) stripping naked before embracing her husband-to-be Harry (Murray Fraser).

The pair share a passionate kiss before the scene cuts to them both in bed.

SAUCY: 'Meghan Markle' stripped naked in a raunchy scene

While the short clip isn’t exactly X-rated, it has reportedly caused outrage at Buckingham Palace.

Director Menhaj Huda told Vanity Fair: “What I’ve heard is that they’re seriously worried about the sex scene.”

He claimed he knew that because “my wife’s best friend has been dating the press secretary of the palace”.

“They’re definitely aware of the film, let’s put it that way,” co-screenwriter Scarlett Lacey added.

Away from the controversial film, Meghan’s half-sister Samantha Grant admitted to Daily Star Online she had staged pictures of her dad before the Royal Wedding.

She claimed Thomas Markle was “being beaten up in the press” and she wanted to “make him better” as he prepares to walk his daughter down the aisle.