Famed English novelist Hilary Mantel launched a volley of insults at the Duchess of Cambridge, Kate Middleton, calling her a "machine-made" princess with no personality of her own and "designed by committee."

Mantel lashed out at Middleton during a lecture at the British Museum about two weeks ago and the 61-year-old novelist also mocked the royal saying that she was like a mannequin in a display window with a plastic smile.

Mantel explained that Middleton neither possessed the beauty of her mother-in-law, Princess Diana, nor the powerful personality of Anne Boleyn who served as the Queen of England from 1533-1536.

"Kate seems to have been selected for her role of princess because she was irreproachable: as painfully thin as anyone could wish, without quirks, without oddities, without the risk of the emergence of character," The West quoted Mantel. "She appears precision-made, machine-made, so different from Diana whose human awkwardness and emotional incontinence showed in her every gesture."

Mantel went on to say that the Duchess reminds her of a doll on whom certain rags are hung. The novelist also scorned the fashion sense of the Duchess explaining that she wears the outfits to try and catch people's attention as she has nothing else to be proud off. She believes that Middleton is defined by what she wears and not by her personality or charm.

"In those days (Kate) was a shop-window mannequin, with no personality of her own, entirely defined by what she wore," she added.

The press coverage that the royal receives too doesn't seem to go down well with the Booker Prize winner as she lashes out at the media for giving her too much attention right from her sense of style to her pregnancy issues.

"These days she is a mother-to-be, and draped in another set of threadbare attributions. Once she gets over being sick, the press will find that she is radiant," adding that the purpose of Middleton's life is nothing but to give birth.