THE ROLLER-COASTER ride continues for troubled songbird

Amy Winehouse,

who just two weeks ago was nominated for six Grammy awards, but was arrested in London yesterday on suspicion of attempting to interfere with a court case involving her husband, according to several British media reports.

The charge - "perverting the course of justice" - is the equivalent of contempt of court on this side of the pond.

Winehouse, 24, recently canceled all concerts and public appearances for the rest of the year on doctor's orders. Her husband, Blake Fielder-Civil, is already locked up after he allegedly tried to interfere with testimony in a case in which he was accused of assaulting a bartender.

Winehouse, an admitted pothead, has been dogged by reports of continued drug use amid a flurry of canceled concert dates. She was recently spotted walking outside of her London home dressed only in a bra and jeans, looking distressed.

The Spears family way

Tattle fears the Bible got it wrong. If anyone inherits the Earth it won't be the meek. It will be the offspring of trailer park celebrities.

As if Family Court isn't busy enough with Britney Spears breeding like a Bayou bunny, TMZ.com reported last night that Britney's kid sister, Jamie Lynn, is with child. And yes, she is having the baby.

Jamie Lynn is 16 and although she stars in Nickelodeon's "Zoey 101," she clearly skipped Sex Ed 101. At this rate, by the time she's Britney's age she could pop out enough kids to field her own baseball team.

The daddy is some boy named Casey Aldridge, whose own daddy, reports TMZ.com, works in a Tennessee paper mill.

Jamie Lynn will reportedly tell her side of the story - we're guessing she was on her back - in the upcoming OK! magazine.

Big sis Britney is reportedly frantic over the news.

As all right-thinking Americans should be.

Divorce court

The acrimonious custody duel between Britney and Kevin Federline will go at least another round.

A court commissioner in Los Angeles yesterday made no changes to the couple's custody arrangements after a 90-minute hearing behind closed doors, and postponed a scheduled January hearing to February.

Spears and Federline have been wrangling for months over custody of their sons, 2-year-old Sean Preston and 1-year-old Jayden James.

Federline, 29, has temporary custody because Spears, who has limited visitation rights, has defied court

orders.

Equally acrimonious couple David Hasselhoff and ex-wife Pamela Bach have finally reached a financial agreement dividing their assets, and will also share custody of their two daughters, Taylor and Hayley, reports TMZ.com. The couple's home in Encino, Calif., where she's been living, will be put on the market.

The unkindest cut

Matthew McConaughey was in stitches - literally - after training for his upcoming fighter flick.

The 38-year-old actor cut his face while preparing for his role in "The Grackle," a new movie from his J.K. Livin Productions, his publicist, Alan Nierob, said Monday.

Last week, after delivering the eulogy at Evel Knievel's funeral, McConaughey was photographed in the passenger seat of a car wearing a bandage over his left eye.

Off the market

Hottie "Heroes" star Ali Larter is engaged to actor Hayes MacArthur. "It happened over the weekend," Larter's publicist, Dominique Appel, told the Associated Press yesterday.

Garden State defense

Jersey boy David Chase testified in federal court yesterday about his dealings 12 years ago with Robert Baer, a former municipal court judge who claims he gave Chase ideas for "The Sopranos" and never got credit.

Chase testified that he had been interested in the mob since watching "The Untouchables" on TV as a kid. And, he said, he was "keenly aware of a 'mob presence' in New Jersey" because he grew up in the Garden State.

According to yesterday's testimony, for several days in mid-1995 Baer took Chase around the state, pointing out alleged mob locations and introducing him to cops and purported mobsters.

On one of these trips, they went to Atlantic City because Chase had read a story in the New York Times that Philly mob boss Nicky Scarfo, who lived in Atlantic City, and his mother were at odds. This intrigued Chase, whose idea for his show was a mob boss in psychotherapy because of his relationship with his parents.

Chase testified yesterday that he wanted to know more about Scarfo and his mother, which Chase apparently learned during his Atlantic City lunch with a cop. That mob mama became the mean and manipulative Livia Soprano, even though Chase says Tony Soprano isn't based on any real-life mobster.

In the suit, Baer claims he declined Chase's offer of payment several times but said Chase had agreed to "take care of him" if the show became a hit. *

The Associated Press and correspondent Robert Strauss contributed to this report.