Another blow for Nicole Kidman after Grace of Monaco's scriptwriter slams film in a manic Tweeting sesh

We're guessing Nicole Kidman rues the day she signed to the production of mega film flop Grace of Monaco.

In the latest instalment causing embarrassment for the Hollywood actress, the film's scriptwriter Arash Amel took to Twitter to discuss the "worst movie of all time".

Yep, on Tuesday night, as Nicole – who played Grace Kelly – graced US TV screens, he started tweeting the following….

Seriously it's not healthy to hold onto stuff this long. Let it go!

In a later tweet he added:  "After I saw finished movie I complained to Harvey [Weinstein] and he heard me. But under French law, director say is final."

You can just imagine how pleased Nic is about the writer drawing even more attention to the most embarrassing film she's ever made. Well, maybe on par with Eyes Wide Shut…but Tom Cruise gets some of the blame for that one.

However, the writer, who had previously claimed he would get his revenge one day after he says French director Olivier Dahan overworked the script, did however commend the Aussie actress on her performance saying she was "terrific on every level".

And alongside a picture of himself on set with the actress he wrote, "And this is me. This picture is up on the wall in my office".

Well, he can’t hate the film that much then can he?