Lindsay Lohan could play a Playboy Bunny in a new movie - if she stays sober.The 'Mean Girls' star - who left rehab last week after a two-month stint for drink and drug addiction - has been offered the chance to appear in the new biopic of Playboy founder Hugh Hefner. Brett Ratner, who is directing the movie, told E! Online: "She is very talented - if she is sober. She would be great as a Playboy Bunny."Ratner is not the only director to offer Lindsay a helping hand in getting her career back on track. James Robinson - who branded the 21-year-old star "discourteous, irresponsible and unprofessional" after they worked together on 'Georgia Rule' - would love to team up with her again. He told the New York Post newspaper: "I would absolutely work with her again. I'd treat her like one of my own kids. She has all this fame and no one in her family to reel her in, no one to guide her, and one thing led to another. She is very, very talented and was never a diva on the set."Movie tycoon Harvey Weinstein recently gave Lindsay's acting career a boost by saying he would be happy to hire her after she left rehab.Weinstein - who worked with Lindsay on 'Bobby' - said: "Of course I would work with her again. She's a wonderful actress. She did a great job in 'Bobby'. Lindsay is a wonderful talent."I just hope that Lindsay is fine. She's a good lady."