Cast of Grace Kelly biopic grows.

British actors Roger Ashton-Griffiths (‘You Will Meet a Tall Dark Stranger’) and Robert Lindsay (‘My Family’), Irish actress Geraldine Somerville (‘Harry Potter’) and Parker Posey (‘Louie,’ ‘Broken English’) have joined Nicole Kidman, Tim Roth, Frank Langella, and Paz Vega on the cast of Olivier Dahan’s ‘Grace of Monaco.’

Kidman stars as Grace Kelly, the Oscar-winning actress who had already spent six years as the monarch of a European nation when she was called upon “to save Monaco from an escalating situation regarding its standing as a tax haven, with French leader Charles de Gaulle giving her husband, Monaco’s Prince Rainier III (Roth), six months to reform its tax laws.”

According to Variety, Ashton-Griffiths will be portraying Alfred Hitchcock, who worked with Kelly on ‘Dial M For Murder,’ ‘Rear Window’ and ‘To Catch a Thief.’ Lindsay will be playing Aristotle Onassis, while Somerville take the role of Princess Antoinette, Prince Rainier’s older sister.

Posey will be portraying Madge Tivey-Faucon, Kelly’s scheming lady-in-waiting, with Milo Ventimiglia (‘That’s My Boy,’ ‘Heroes’) in talks for the role of Rupert Allan, Kelly’s publicist, who served as consul general for the principality of Monaco. In 1989, Allan was honoured a Chevalier of the Order of Grimaldi for his services.