The latest secret to Jennifer Aniston’s perfect body has been revealed.

Jennifer Aniston, 43, is said to be an ardent fan of a new $8 “wonder” smoothie – and drinks nothing else on one day every week.

A source told Grazia magazine: “The drink is made up of fresh, organic vegetables. Beetroot, cucumbers, spinach, garlic, carrots, celery and kale.”

According to the source, Jennifer Aniston drinks the super healthy concoction one day a week, usually on a Saturday.

Nutritionist Jeannette Jackson said the smoothie can have amazing and cleansing health benefits.

“The alkaline vegetables prevent bloating, help ease water retention and even mood swings.

“Beetroot helps clean the blood of toxins, celery and carrots boost potassium and sodium levels, and kale and parsley offer immense benefits to the brain, so you’ll feel less stressed. The drink is filling so should be easy to do for one day a week, but make sure it’s part of a healthy balanced diet,” she said.

Rumors are rife that Jennifer Aniston’s new smoothie diet is forming part of the preparations for a wedding after onlookers spotted her and boyfriend Justin Theroux looking loved-up in Paris last week.

Jennifer Aniston drinks the super healthy concoction one day a week, usually on a Saturday

Make Jennifer Aniston’s smoothie at home

You’ll need:

• Six organic cucumbers

• Three large organic beets

• Two bunches spinach

• One bunch organic kale

• Fresh garlic and ginger

• One bunch organic carrots

• A stick of celery

Pulp all the vegetables together in a juicer. Add a little cayenne pepper or a herb such as parsley, to make the juice blend taste like a vegetable soup.

Immediately refrigerate the juice in a glass (no plastic jugs).

Drink as much as you want, all day, for one day a week.