Los Angeles (eCanadaNow) - Lindsay Lohan has warned her younger sister to stay away from nightclubs if she wants to be a star.

The 'Mean Girls' beauty - who completed a two-month stint in rehab last year for drink and drug problems - is keen for aspiring actress Ali, 14, to avoid all the pitfalls she endured.

She said: "I've urged her to keep her head on straight. She needs to stay away from clubs! But I wish her the best of luck."

Ali - who recently admitted she was desperate to be famous in an interview with Teen Vogue magazine - is set to appear in a reality TV show with mother Dina.

Meanwhile, Lindsay insists she has recovered from her problems last year.

The 21-year-old star said:  "I'm doing great. I'm really focused."

Lindsay recently bought a two-bedroom New York apartment so she can escape the paparazzi.

Speaking about the high-rise property, she told US TV show 'Extra': "The security is fantastic here, which I think is really important. It's hard to have a private life and keep relationships and that sort of thing, but I had four days off from them recently in Los Angeles and they didn't follow me at all."

(C) BANG Media International