Because of my childhood where I was constantly by myself, I always feel lonely. I have a lot of people that I absolutely love and I know love me but I can't get rid of that feeling of loneliness no matter who I'm with - even with my children.

I know what it's like not to have food in the fridge or money to buy more.

I live a very different life now, with incredible privileges, but looking back I realise that growing up in Russia gave me tools that other people don't necessarily have - such as the will to push that bit further, to make things happen, to succeed.

When I really treat myself, I go to incredible Leonor Greyl in Paris for a head massage.

But when my grandmother saw me plucking [my eyebrows] she said: 'Don't. You will regret it. One day you will wake up with no eyebrows and think how stupid you were. Your eyebrows are the most beautiful thing about you.'

Sometimes I just need to switch off.

If you never know hardship, you can't really support people around you.