The 41-year-old singer ' who is single after filing for divorce from husband Wayne Newton in April after three years of marriage ' insists she won't give up on the idea of having a child of her own within the next 20 years.

She said: 'Having children has been a hope for me since I was very young.

'For a period of time when I was married, I was saying no, but I'd have to be 60 to give up hope.'

The US star admitted she would consider adopting a child if she was unable to conceive a child naturally.

She added in an interview with Reveal magazine: ' would adopt, like Sandra Bullock. There doesn't have to be a father, a mother, two dogs and 2.5 children to be a perfect family.'

The singer ' who has previously battled breast cancer ' insists she doesn't worry about her health these days but admits her biggest ambition for the next 10 years is to still be alive and healthy.

She said: ' don't worry about the cancer coming back. I have annual check-ups. If I worried abut it, I wouldn't be able to move on. We waste too much time worrying about tomorrow.

'When I'm asked where I want to be in five or 10 years time, I say I just want to be alive and healthy.'