Jennifer Aniston on Baby Food Diet

At 41, Jennifer Aniston is in incredible shape and has an amazing body.

What's her secret to staying in such good shape?

Baby food diet, people!

The actress has embarked upon a baby food diet - created by her personal trainer Tracy Anderson - who has also worked with Gwyneth Paltrow and Madonna.

The former Friends star has shifted 7lbs in one week on the regime. Her special diet involves 14 portions of puréed food a day followed by a healthy adult-sized dinner.

Speaking about her diet, Tracy told Hollyscoop, "I developed a cleanse where you can still eat and it's a lot of puree foods. I was very careful about the foods I chose to put in it."

She added, "When you do these liquid cleanses I felt a responsibility to come up with something. Liquid cleanses do help you lose weight but you will gain more the next week. I wanted something where you can eliminate toxicity, break bad habits but still have your digestive system going. That is when the baby food cleanse was born. You get to eat all day, these little puree things and the chocolate pudding I did is pretty killer."

The food includes fruit smoothies, puréed oatmeal, pears with cinnamon, soups containing dandelion greens and a dinner of lean meats and vegetables.