There is so much pressure to be thin, and you constantly compare yourself to others. But confidence is something that comes with age and experience - it has to be earned along the way.

I ski every three years or so. I don't have the ingrained confidence that others do, but I'll happily toddle about a green or blue run.

With age comes a greater wisdom, an ease and comfort with oneself.

I just want to say to women, 'Be yourself - it's the inner beauty that counts. You are your own best friend, the key to your own happiness, and as soon as you understand that - and it takes a few heartbreaks - you can be happy.'

I really enjoyed staying at an encampment at the top of a hill in the Samburu Reserve in Kenya. You reach it on a small plane; there is no electricity, no city noises and you sleep and shower under the Milky Way, with moths fluttering around a kerosene lamp, knowing that there are elephants and lions roaming free in the valley.

The advantage of age is that you swap youth for wisdom. You're so full of insecurities when you're young. 'Who am I? What do I have to do for people to like me?' You get caught up in things. You get very emotional about things.