Once upon a time you couldn't open a glossy magazine or watch a film premiere without some celebrity or other pledging their devotion to the Atkins diet. How times have changed - it seems healthy carbs are the order of the day for those stars who are serious about maintaining their amazing bodies.
With low carb and high protein diet plans being linked to cancer it looks like the days of Atkins and its ilk are numbered.
Jessica's personal trainer told U.S. magazine about the actress's regular diet, which gives traditional Atkins staples like red meat, cheese and cream a miss.
"Breakfast would be whole grain bread French toast with egg whites and cinnamon. For a mid-morning snack...a mixed-berry protein shake. Lunch might be sweet potato tuna melt. An afternoon snack might be hummus with celery sticks. Dinner would be spaghetti and meatballs with spaghetti squash and meatballs made of turkey or chicken breast."
Jennifer's fantastic figure has often been attributed to following either The Zone or Atkins, but six months ago she endorsed a recipe book by sisters Jewels and Jill Elmore called The Family Chef.
In the introduction to the book, Jennifer writes: "It's taken me time to learn that the key to having a great physique isn't to deprive oneself of food."
The recipes include wholewheat toast with apple butter and cottage cheese, peach and ginger smoothies, and chicken burritos with cheese and sour cream.
Surely the best part of following a diet which doesn't exclude carbs is losing weight without the grim Atkins side effects of foul breath, dizziness and constipation?
If you're frustrated with a low-carb plan, show your system some love and stick a baked potato in the oven - researchers say there's no evidence they cause weigh gain and you've got Jen's blessing!