The 56-year-old actress--who famously starred opposite John Travolta in 1978 musical Grease--has so far resisted going under the knife and claims her good looks are purely genetic.
She says, "I haven't had plastic surgery yet, though I would never say never. However, I would like to think that I won't because the thought of it is an uncomfortable one.
"I think I'm just fortunate, genetically, and I've always said that I want to age gracefully like my mum did."
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