Sadie Frost says the secret to her fantastic figure is a "green juice" made from pineapple and avocados.

The 45-year-old actress-turned-designer credits her specially-made morning drink as one of the reasons why she manages to stay so slim and healthy, reports femalefirst.co.uk.

"I have a green juice every morning which contains avocados, pineapple, omega oils and protein powder," she said.

Sadie, the ex-wife of actor Jude Law, also leads an active lifestyle and takes part in regular exercise and relaxation sessions.

"I do yoga, a power plate session, a pilates class and a training session every week,' she said.