The 41-year-old singer-and-actress was inspired to launch her own charitable organisation The Maribel Foundation – which is named after her husband Marc Anthony’s sister, who died from a brain tumour - after giving birth to twins Max and Emme, now three.

She said: “What’s the most empowering thing I’ve ever done? God. Probably giving birth. And as a direct result of that, setting up a charity with my sister Lynda.

“It was a dream we had for a long time. Once we had babies we were ready to say, ‘Let’s do it’. We’re not claiming to change the world in one day, we’re just going to do our little part.

“We always said we’d help women and children’s health and education and now it’s happening.”

Jennifer also believes that the more women are happy with themselves, the more likely they are to take in interest in their appearance.

She said: “A part of how you take care of yourself on the outside reflects how you feel within.

“If you become empowered on the inside, it will get reflected on the outside. I don’t believe for one second that’s a superficial thing, it is important.”

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