Sharon Osbourne has been named the ultimate plastic surgery success.

The 55-year-old 'X Factor' judge - who has admitted to spending around $600,000 on cosmetic improvements - was named the Queen of the Nip and Tuck in a poll of 3,000 women for TV station FX Channel.

She beat 62-year-old actress Helen Mirren, who is rumored to have had a subtle face lift, into second place.

A spokesman for FX, which shows hit plastic surgery drama 'Nip/Tuck', said: "Both look fantastic."

Sharon - who is married to rock legend Ozzy Osbourne - recently said she regrets have so much plastic surgery and vowed never to go under the knife again.

The mother-of-three -- who has had stomach stapling, a boob job, facelift and liposuction -- said: "My body's tired. I've put it through too much, abused it and my body is knackered. I am content with how I look at my age and I'm really scared of ending up looking like those people whose faces are ironed and foreheads don't move. I regret having my breasts done because I'm never happy with them. But the most painful was having my legs lifted. So right now, I''ve really, really had it with surgery."

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