Ali Lohan Turns 18, Celebrates With Lindsay

Lindsay Lohan's model sister, Ali, would like to be called by her full name, Aliana Lohan, now that she's turned 18. It sounds more mature. That's her reasoning.

Whatever name you call her by, she's now a legal adult, and the family feted Aliana with a birthday celebration at Beaumarchais restaurant in NYC December 21.

Lindsay, along with a group of her friends, mom, Dina, and younger brothers Cody and Michael Jr. - also celebrating his 24th birthday BTW - honored Ali/Aliana.

"It's clear Lindsay and Michael Jr. are very close. They were talking a lot. Michael had his arm around her. She seemed to be confiding in him," an eyewitness said.

She also went outside to smoke cigarettes with her mom at one point.

Later on that night, Playboy cover girl Lindsay "ordered a bunch of glasses of champagne for the table and switched to drinking that," says a source.

Yay. Later, Ali Lohan and her new face snapped photos on Lindsay's camera before her older sister got up to ask the restaurant staff to prepare a cake.

Although Aliana has been called an anorexic waif, she doesn't seem to be watching what she eats. Adds the eyewitness, she wolfed down the whole meal!

We hope it stayed down. Not to be cynical, but just saying.

[Photo: WENN.com]