Lindsay Lohan

During HER 10 years as a famous person, Lindsay Lohan has worn a dizzying number of public masks. She began as a beloved Disney tween queen and a much-praised box-office lure.

Actress Lindsay Lohan, whose hard-partying ways have become a mainstay of the supermarket tabloids, has reportedly checked herself into a Los Angeles rehabilitation clinic. Us Weekly reported that the actress arrived in a blacked-out SUV on Wednesday at the Wonderland Center in Laurel Canyon. Lohan, 20, has been the subject of much speculation about whether her partying had crossed a line. Late last year, Lohan's mother, Dina, told the media that her daughter had been attending AA meetings.

Hard-partying actress Lindsay Lohan was arrested on suspicion of drunken driving Saturday after the rehab veteran crashed her Mercedes convertible in Beverly Hills shortly before dawn. Lohan, 20, who could face more charges, was slightly injured after she lost control of her car traveling west on Sunset Boulevard about 5:30 a.m., Beverly Hills police said. The car ended up striking a curb and shrubbery along Foothill Road.

Up until this weekend's latest escapade, bad girl Lindsay Lohan was scheduled to spend the summer appearing in a bonanza of high fashion ads and marketing blowouts, culminating -- depending on your point of view -- in the horror flick "I Know Who Killed Me," featuring Lohan in the dual role of troubled stripper and high school teenager, or in her 21st birthday party extravaganza at Pure nightclub in Las Vegas on July 2 and 3.

Authorities are trying to crack down on one of the worst-kept secrets in Hollywood: underage stars partying hard at trendy clubs on the Sunset Strip and Hollywood Boulevard. Doormen at Hollywood hot spots have been lifting the velvet rope for teen stars for years. Two decades ago, Drew Barrymore became tabloid fodder after being spotted drinking at Hollywood clubs when she was 13 and 14.

Johnny Grant, the longtime Hollywood showman and Tinseltown's unofficial mayor, has seen a lot of star antics over the decades. But from his penthouse apartment atop the trendy Hollywood Roosevelt Hotel, Grant, 84, said he's not happy about what he's seeing today -- especially amid investigations focusing on underage starlets partying at Hollywood hot spots. "They're out of hand today," Grant said. "They used to be much more discreet. Studios used to control their images.

WELCOME TO the club, Lindsay. Hope you stay awhile this time. Though it seems unbearably frivolous -- this incessant celebrity hopping from bar to rehab and back -- it's anything but. Life and death are at stake, and believe me, I know. I almost died like Anna Nicole Smith and her son did, but after ER docs saved my life, I woke up in intensive care, strapped down tight. Quite right: I was a booze-and-drug-addled lunatic. That's the bad news.

Whenever Lindsay Lohan so much as sweats, it is required that some journalist, somewhere, write a story about it. So here is that story. After all, you can learn a lot about people from their sweat. If they've been exercising or eating cloves of garlic. Or in Lohan's case, if she's been drinking too much alcohol, as she has been known to do on occasion.

Actress Lindsay Lohan surrendered to Beverly Hills police Thursday and was booked on suspicion of misdemeanor hit-and-run and driving under the influence of alcohol. A news release from the Beverly Hills Police Department said the actress, accompanied by an unidentified lawyer, completed the booking process "without incident." She was then released on her own recognizance.

Lindsay Lohan and her handlers had hoped to keep her sobriety going with a special ankle bracelet that monitored her alcohol intake through her perspiration. Instead the technology -- sometimes imposed by Los Angeles County authorities and used by other celebrities trying to go straight -- just helped chronicle her fall off the wagon. The 21-year-old actress was arrested Tuesday after the mother of one of Lohan's assistants dialed 911 to report that she was being chased by Lohan in her SUV.