Kate Middleton's Mom, Carole Middleton Tries to Lose Weight for the Royal Wedding: "Dukan Diet" is reported to be her favorite celebrity diet

Dukan Diet is the favorite diet of Kate Middleton's mom, Carole

Kate Middleton (left) with her mother, Carole a former airline hostess

Pierre Dukan from Paris is the creator of the Dukan diet. He came out with a book in May 2010 and has sold 250,000 copies in the UK alone. Mr Dukan was quoted as saying that there are two reasons why the book is selling so well; 1. It works, 2. Carole Middleton is using it.  Carole Middleton had reported that she lost 4 pounds in 4 days of being on the diet.