Jimi Hendrix's ex-girlfriend Kathy Etchingham has publicly condemned a new biopic of the music legend, branding the movie inaccurate and miscast.

Etchingham, who dated the musician for several years and is portrayed by British actress Hayley Atwell in All is by My Side, opposite Andre Benjamin, better known as former Outkast star Andre 3000, as Hendrix, is not happy with the way her story has been altered for the big screen, and her lawyers have asked for numerous corrections in a bid to improve the accuracy.

She also reveals movie bosses ignored her when she offered to consult on the project, telling Britain's Sunday Express, "I wrote them an email when I first heard about it (the film) saying, 'If you want any help don't hesitate to contact me'. They didn't reply.

"(The film's costumes have) Austin Powers written all over (them); I would not be seen dead in anything like that... Andre and Hayley are much older than Jimi and I were, and it shows... A lot of people will go and see it who have never read any of the biographies and they will think it's the gospel truth. I don't want it (the film) to fundamentally change history."

The film premiered at this month's (Sep13) Toronto Film Festival in Canada.