Lindsay Lohan's sister determined to learn from Lindsay's mistakes

Lindsay Lohan's younger sister Aliana has sworn off drink and drugs as she is determined to learn from her sibling's mistakes.

The Mean Girls star has been in and out of jail and rehab in recent years, battling with both booze and illegal substances, and her 17-year-old sister, who recently signed a modelling contract, is adamant she won't follow the same path.

She tells New York Post gossip column Page Six, "I just say no (to drink and drugs). I'm lucky enough that I had my sister to learn from... I've seen people do it to her and I've learned to be like, 'That's stupid, no'. That's why Lindsay and me are so close, because we're able to talk about those things together."