I am not embarrassed to say that when I was at my worst I took anti-depressants because I think people need to hear that. I think if you are in a dark place where you can't pull yourself out, you may need to ask for help.

Man is taking over the forests and polluting the oceans, the animal species are threatened. I try to contribute as much as I can. We're really messing up our environment. I try to get people more aware of what's going on so that they can, even in a local way, try to prevent pollution to their lakes and rivers and prevent nuclear dumping in the oceans - it's bad enough that they're doing it in residential areas, but putting it in the ocean! Eventually it's going to pollute our food resources and, if the ocean dies, we're gone.

Nothing I have done professionally will top the feeling I got when singing with John Farnham at the 2000 Olympic Games in Sydney.

My biggest mistake was my best lesson... you don't learn anything when everything is going perfectly.

There's a balance in my life, there's reality and there's the part that looks really glamorous, but we're all just people in the end.

I have had someone wonderful things happen to me during my career and lifetime. Of course, personally, the birth of my daughter is the highlight of my life.

I love seeing young girls and their parents and grandparents at my concerts all loving the music from Grease when I perform those songs (and yes, I do perform a bunch of them!).