New low for Lohan

Lindsay Lohan checked herself into rehab following a wild weekend in which she was arrested on suspicion of drunken driving after being involved in an auto accident.

After the accident, Lohan continued to party with friends after she was released by police until she apparently collapsed outside a Hollywood nightclub. The collapse was captured in photos and posted on the X17online.com Web site over the holiday weekend.

"Lindsay admitted herself to an intensive medical rehabilitation facility on Memorial Day," according to a representative for the actress. "Because this is a medical matter, it is our hope that the press will appreciate the seriousness of the situation and respect the privacy of Lindsay as well as the other patients receiving treatment at the facility."

In Touch Weekly said Lohan had reportedly checked into Promises, the Malibu, Calif., rehab center where Britney Spears stayed.

Now family members, fans and detractors alike are wondering: Can Lohan turn her career and her life around?

Not long ago, she was one of a crop of wholesome starlets whose target audience was mainly tweener girls. Now Lohan is joining the ranks of such celebrities as Mel Gibson and the country star Keith Urban, both recently treated for various addictions and behavioral problems. As Lohan, who turns 21 in July, makes her second trip to rehab, she may be facing something much tougher than a quick public-relations pit stop.

TMZ.com reported that Lohan's next role, in the Shirley MacLaine film "Poor Things," will be put on hold.

"A 30-day rehab is not necessarily enough time to make the changes people need to make if there are deeper, underlying issues," said Thomas Demaria, a clinical psychologist and assistant vice president of behavioral health at South Nassau Communities Hospital in Oceanside. "The process of figuring out why the person started using those substances can take some time."

Lohan's father, Michael, has admitted to battling alcoholism and recently served time for attempted assault, aggravated unlicensed driving and other charges. Yesterday he said he plans to ask his parole officer for permission to fly to Los Angeles to visit his estranged daughter. "Enough is enough," he said. "This is ridiculous. If it costs me my relationship with Lindsay to help save her life, then so be it. I don't care about anything else. This is far beyond worrying about what people think."

Lindsay Lohan's mother, Dina, did not return calls placed through her publicist.

Lindsay Lohan's career has been uneven since she made her 1998 debut in a dual role as the troublemaking twins in the remake of "The Parent Trap." She shone in the critically acclaimed "Mean Girls" (2004) and held her own with the likes of Meryl Streep and Lily Tomlin in last year's "A Prairie Home Companion," director Robert Altman's final film. But her latest, "Georgia Rule," received lukewarm reviews, and her behavior prompted a stern warning letter from the film's production company.

Jessica Simpson and John Mayer Split

Mayer and Simpson very recently split up, and sources told PerezHilton.com that is was Mayer who broke up with Simpson.

"They officially called it quits this past weekend," a source told the site. "They'd been having problems for a while now and just decided it'd be better to end things."

Just a few days ago, Simpson's father was praising Mayer in the press.

While Jessica is currently at the Cannes Film Festival — smiling for the cameras — John also appears to be delving back into the single life, according to Perez.

Mayer and pals partied at New York City club Stereo on Thursday night, and the rocker was having a really good time.

"He was way tipsy and was spending a lot of time with an ugly brunette that was not Jessica Simpson," a source told PerezHilton.com.

Why did they break up? As reported in Pop Tarts Thursday, Simpson was said to be furious that Mayer lingered and laughed with the pretty Roberta Armani (Giorgio's niece) at last week's Costume Institute Gala, according to Australian magazine Famous.