The American actress' performance as ruthless fashion magazine editor Miranda Priestly in the 2006 movie is thought to be based on real-life U.S. Vogue editor Anna Wintour as the novel the film was based on was written by her former assistant Lauren Weisberger.

Anna is famous for her own distinctive bob haircut, but according to Helen, its star instead decided to borrow her style rather than copy the famously ferocious style queen's.

"Meryl Streep once told me she 'borrowed my hair' in The Devil Wears Prada," she tells Britain's Woman & Home magazine. "I thought it was a massive compliment. I saw a picture of her playing the role and thought, 'Oh yes, that is my hair!'"

Helen and Kim Basinger were rumoured to have been under consideration for the role of Miranda, but the part ultimately earned Meryl a nomination for Best Actress at the 2007 Academy Awards.

Victorious in the category that year was Helen, who won for her role as Britain's Queen Elizabeth II in Stephen Frears' drama about the aftermath of the death of Princess Diana of Wales, The Queen.

Meryl may yet get a chance to return as Miranda again, as Lauren published a follow-up to the novel, titled Revenge Wears Prada, in 2013.

Plans for a new film following Miranda Priestly and her underlings are yet to be announced, but one of the film's stars, Emily Blunt, revealed in 2014 that she'd love to return for a sequel, as long as her co-stars Meryl and Anne Hathaway also returned.

"I would do it, but only if everyone did it," she told E! News. "I don't know why it hasn't been done, but everyone's got to do it."