William and Kate: Private moments revealed?

-- It's a scene few would witness -- the sight of a scantily clad, soon-to-be-royal Kate Middleton serving Britain's Prince William breakfast in bed.

But for Australian Simon Watkinson, it's an image he's all too familiar with.

No, this isn't a private scene of royal domestic bliss snapped by an unscrupulous paparazzo. This is a photo shoot by celebrity look-alike photographer Alison Jackson -- with Watkinson playing the leading role of Prince William.

The photos are all part of a "behind-the-scenes" book entitled "Kate and Wills Up the Aisle" -- a spoof retelling of the romance between the royal couple, who will marry, for real, on April 29.

"My intention is to look behind the scenes of the public face," Jackson said.

"Remember, we don't really know much about the royal family and what goes on, so I'm trying to imagine what it might be like," she said.

Prince William and his fiancee's penchant for privacy was a bonus for Jackson, allowing her a certain amount of artistic licence when it came to imagining the couple's private lives.

"Prince William is very much a blank canvas ... and Kate keeps very much a blank canvas I think," she said.

"To think Kate has been going out with Prince William for something like eight years and the public didn't really know about it. It's quite extraordinary."

For Watkinson, the shoot is a change of scenery from his everyday job as a civil engineer.

"It's been a lot of fun," he said. "We've been doing some crazy shoots and getting a lot of good feedback from the public.

"With Alison, it's a little bit more risque," he said. "Some of the shots are with slightly less clothing. You never know what to expect."

Starting with the couple's early courtship at St. Andrews University and ending with pictures of the big day, Jackson has imagined everything from the couple's brief breakup in 2007 to the proposal last year.

The book also features a host of celebrity look-alikes, including singer Elton John, English footballer David Beckham and Britain's X-Factor judge Cheryl Cole.

For Jackson, the most difficult part of the project was finding the right models.

"I had an excellent Prince William look-alike, but unfortunately he opted out, so I was left with no good look-alike," she said. "But suddenly a new Prince William turned up so I was able to make the book. Without him, it would have been completely impossible."