Katy Perry's 5- star wedding diet

US trainer of the stars Harley Pasternak - this exclusive extract from his book
Forget size zero - 5's the magic number

Harley's credited with helping change the must-have shape of Hollywood stars from skinny to sexy.

Under his guidance Katy Perry may be slimming down but she certainly won't be losing the curves that helped her top Maxim's list of the world's hottest 100 women - and brought her to Russell Brand's attention.

In fact, after meeting her at the X Factor auditions, super-slim Cheryl Tweedy reportedly told a friend: "I look like a little boy next to Katy."

But Harley's 5-factor plan is for real women who want curves in all the right places - not those who want to shrink to a shocking size zero.

"If you're emaciated skinny, you don't feel great," he explains. "Women should look like women. They need natural curves - and if they're too lean, their hormonal cycle gets thrown off and they stop looking and feeling like women."

Your curves plan Here's how the magic number 5 can help you get curves in all the right places...

The 5 factor rules...

Follow these simple rules...

(1) Eat 5 times a day - you'll feel less hungry throughout the day and keep cravings at bay.

(2) Meals must consist of 5 ingredients or less - so they're fresh, healthy and cheap to make.

(3) Meals should take just 5 minutes to prepare - so it's easy to stick to, no matter how busy you are.

(4) Allow yourself one cheat day a week - taking a break where you can enjoy your favourite foods helps you stick to the diet (5) You should do 5 short workouts a week.

Harley's star-studded client list

JENNIFER HUDSON, 28

Harley helped the American Idol star slim from a UK size 16 to a size 10 recently. "I think she looks fantastic," says Harley. "She's not someone who typically liked exercising but she saw the results and we got her working out five days a week."

LADY GAGA, 24

The outrageous but super-toned singer takes Harley on tour with her to keep her body in hot shape: "She wanted to have the best abs, legs and arms ever - so she stepped up her workouts. Now she's super confident about her body and comfortable wearing everything," says Harley.

HALLE BERRY, 43

Halle called Harley to help get her amazing body even more buff for the X-Men 3 movie. "She has no problem working her butt off as long as she doesn't have to do it for too long, and as long as she sees results," he says.

JESSICA SIMPSON, 30

The US actress turned to Harley after her weight ballooned last year. "She wanted to be strong, athletic and fit and have definition in her arms, legs and abs - but keep her feminine curves," he explains.

YOUR DIET

The 5 meal ingredients...

Every meal should include...

(1) A low-fat protein: chicken breasts, fish, shellfish, egg whites or cottage cheese.

(2) Healthy carbohydrate: beans, lentils, brown rice, wild rice, fruit.

(3) Fibre: from healthy carbs such as beans, oats, lentils, barley, brown rice, wholegrain bread, vegetables (except potatoes) and fruit.

(4) Healthy fats: cooking oils such as olive and rapeseed (no full-fat dairy).

Read more: http://www.mirror.co.uk/news/top-stories/2010/08/16/katy-perry-s-5-star-...