'Sex and the City' actress Kim Cattrall has issued a warning to families across the globe - urging them not to let their children see the hit TV series or its new big-screen movie version. Cattrall's comments came after 15-year-old teenage child star Miley Cyrus admitted to being a fan of the HBO program. The 51-year-old is disturbed to discover that parents are letting their young daughters watch 'Sex and the City: The Movie'. Cattrall, who plays maneater Samantha Jones, insists the age limitations are there for a reason - as the content in the movie is too nasty for youngsters. "This is not a film produced for an eight-year-old, they don't need to undestand this at a young age," she said. "I want to say to women, this is not for all women. "It's grownup entertainment - it's an R-rated film." The actress acknowledges that the only time she has turned down a script was during the TV series, when writers created a plot that entangled her taking tips on fellatio from a 13-year-old teenager. "I remember saying, no, stop - this would never happen unless a woman was not in her right mind," she said. "And I think that's the exclusive time in the show and TV program that I said: 'I'm so sorry, but I can't perform that part.' And they re-wrote it."