Mariah Carey always wears high heels - even when swimming.
The singer, known for her diva demands, says she can't wear flat shoes but can do anything in heels.
She told Britain's The Times newspaper: "I guess I'm a heel girl. I can run in them. I could swim in them if necessary.
"I can't wear flat shoes - they give me blisters. My babysitter used to laugh at me because when I was 12 I would always tiptoe. I couldn't walk flat."
Mariah, 37, also revealed she hopes scientists will have invented a cream to cure old age by the time she needs plastic surgery.
She added: "I hope when I get to the stage when I might need to contemplate cosmetic surgery there will be a cream.
"We're still not sure what's in Botox. I'm lucky - because of my ethnicity, I think that I'll be able to live with the lines. But I think ageing at all is just horrible."
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