Cillian is quickly establishing a reputation as an impressive performer, following roles in Batman Begins, The Wind That Shakes The Barley, and Girl With A Pearl Earring.

Sienna bags Lindsay’s old role - April 24 2007
Sienna Miller has stepped in to fill Lindsay Lohan’s shoes, starring opposite Keira Knightley in The Best Days Of Our Lives, after the flame-haired starlet pulled out at the last minute.

Li-Lo was due to move to the UK at the weekend to start work on the film, which is scheduled to start filming in London and Wales on May 7.

But the actress passed on the role - and the move - after failing to reach an agreement over her contract with the film’s financiers, according to Variety.

With a script penned by Keira’s playwright mum, Sharman Macdonald, the film tells the story of poet Dylan Thomas, who will be played by Matthew Rhys, and the two women vying for his affections.

Sienna will replace Lindsay as Dylan’s wife Caitlin, while Keira will play Vera Phillips, his free-spirited childhood friend.

The film, which is rumoured to contain a steamy threesome involving the two lead actresses, will be directed by John Maybury, who previously directed Keira in The Jacket.

Sienna’s snapper fracas - April 4 2007
A photographer apparently got into a scuffle with members of Sienna Miller’s entourage on Sunday night, as the star strove to avoid being snapped hanging out with Sean ’Diddy’ Combs in London. see photos of P Diddy’s party

The rapper himself was kind and courteous when he left the club where he had been partying with the actress, but the shy starlet attempted to bypass the waiting paps - to no avail.

Instead, in an incident involving two people in her group, one cameraman was allegedly pushed off the pavement as Sienna rushed by on her way into the trendy Soho Hotel.

The snapper in question hasn’t commented on the incident and it’s unlikely to go any further. But the actress’s rep made a statement to TMZ.com about what happened, saying: "It is unfair that the press isn’t courteous in giving her her space. It’s getting uncomfortable for people to walk and London’s a walking city."

Sienna can be seen back on the big screen later this year in fantasy film Stardust, alongside Robert De Niro, Claire Danes and Ricky Gervais.

Sienna: I’m not that kind of actress - Mar 21 2007
Sienna Miller has put an end to rumours that her Factory Girl sex scenes were real.

Even the film’s director George Hickenlooper had refused to deny claims that Sienna and co-star Hayden Christensen had taken their method acting a little further than normally required. But in an interview with New! magazine, the actress dismissed the rumours out of hand.

"There’s a name for people who actually do have sex on film and get paid for it but I’m not that kind of actress, nor is Hayden," the actress said.

"So the sex scene is not real but I’m flattered that people think we did a good enough job that it might be."