Kate Middleton doing the Dukan

Future princess Kate Middleton has a little more than 40 days before her royal wedding. Now that she’s worrying about her figure, rumors are saying that she is now on the highly-popular Dukan Diet in order to shed enough pounds before her big day.

The French diet is both low in carbs and high in protein. It is being reported that Middleton’s mom is on it as well, starting with the diet as early as November of last year. The mom and daughter duo aren’t the only ones seen on the fad diet as celebrities such as Nicole Kidman and Jennifer Lopez have gotten onto the bandwagon as well.

A simple breakdown of the Dukan Diet is its four stages—attack, cruise, consolidation and stabilization—and has been said to feel more like a boot camp enlistment to the body rather than a diet.