The 'Mean Girls' actress says aspiring star Ali has the right personality to deal with the Hollywood club scene, even though she's six years under the US legal drinking age.
Former child star Lindsay - who has completed three stints in rehab in a bid to get help for her drink and drugs use - said of Ali: "She's tougher than I am. She has a good head on her shoulders. Maybe it was different for me because I didn't know what to expect and it just happened really fast. I didn't have a big sister."
Lindsay, 23, also insisted Ali is very sensible and won't go out partying if she has schoolwork to do.
Said added to Life ad Style magazine: "She's really good about that. If I'm going out late, she'll go home early."
However, the girls' father Michael Lohan recently claimed Lindsay was leading Ali astray as he thinks she is too young to go out partying.
Michael - who claims Lindsay is addicted to prescription drugs - said: "Lindsay's leaning on Ali right now. Do you think that's good? Leaning on your 15-year-old sister? I think Ali's following the same path!"
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