Ali Lohan sure is starting to look a lot more like her older sister. And that’s not a good thing. The two have been spending tons of time together during Lohan’s post-breakup comeback tour. They were joined at the hip in L.A. two weeks ago and were often spotted out shopping. Then they went to Maui with a bunch of Lindsay’s friends last week. And last night Ali was photographed with Lindsay at the Teen.com and LG Haute & Bothered launch party in West Hollywood.

Lindsay looked absolutely wasted – even for her. There’s no doubt she’s off the wagon. She was leering at her poor little sister and even making kissing faces at her. And I can’t help but ask – when the hell does Ali Lohan go to school? She’s 15. Lindsay may need Ali, but Ali sure as hell doesn’t need Lindsay. She’s toxic, and can only harm her sister.

Ali Lohan may score a lot of perks thanks to big sis Lindsay – think nights out in Hollywood hotspots, Beverly Hills shopping sprees and the recent trip to Hawaii where the pair wore teensy bikinis and were photographed constantly. Unfortunately, one thing the 15-year-old starlet isn’t getting from Lindsay is a good role model who’s making positive life choices. Experts say the sibling relationship could actually be harmful to Ali’s mental health.

“If you have an older child who is breaking a lot of the rules and engaging in dangerous and risky behavior, this can have a negative impact on the younger child,” said Dr. Eva Ritvo, psychiatrist and vice chair of psychiatry at the University of Miami School of Medicine. “Adolescents are trying to break away from their family and they don’t always make the best choices. They’re looking for role models other than their parents, and often turn to peers and older sisters, who can have a very powerful influence on the younger child,” she said.

Impressionable Ali can hardly help but notice Lindsay’s partying, stints in and out of rehab, and her skin-and-bones appearance. But how she reacts to those things could go one of two directions, experts say. Some teens with out of control older sibs may copy them, while others fall into the role of trying to protect loved ones from the person. “You either try to outdo or you become a caretaker,” says Dr. Keith Ablow, psychiatrist and Fox News contributor, who founded the website www.LivingtheTruth.com.

“The course Ali is taking appears to be more in the direction of copying than in shrinking from the cameras and the revelry,” he said.

[From the Daily News]

Obviously all the experts are speaking in generalities, but it doesn’t seem like Ali’s got much of a chance of being an exception to the rule. She obviously has no parental supervision. What, Dina Lohan’s not looking out for everyone’s well-being like the mother hen we all know her to be? My jaw dropped too. But Ali’s looking more and more skanky every day, and Lindsay’s looking drunker and drunker. This whole shizz is spinning out of control, and if someone doesn’t do something quickly, Lindsay’s going to take Ali right down with her.

Here are Lindsay and Ali at the Teen.com and LG introduce the Haute & Bothered launch party at the Sunset Tower in West Hollywood last night. Images thanks to WENN.com .