K-Fed — I Want a Custody Hearing STAT  —  TMZ has learned that Kevin Federline has asked a judge for an emergency hearing on Thursday to discuss his custody dispute with estranged wife Britney Spears.  —  A court spokesperson says only K-Fed and his attorney are scheduled to appear before the judge, but adds "anything is possible."

EXCLUSIVE: Marcia Cross Welcomes Twin Girls  —  How's this for a double feature?  Marcia Cross became a mom on Tuesday, welcoming fraternal twin daughters, her rep confirms to PEOPLE exclusively.  —  The girls, Eden and Savannah, who were born at a Los Angeles hospital …

Kim Kardashian Files Suit To Prevent Sex Tape Sale  —  Celebutante Kim Kardashian has filed a lawsuit against a company threatening to release a sex tape of her and singer Ray J (aka Brandy's little brother).  —  She filed the suit against Vivid Entertainment, asking for unspecified damages …

Howard K. Stern: Anna Nicole Smith Paid My Rent  —  Howard K. Stern was entirely financially dependent upon Anna Nicole Smith, he revealed Wednesday during the ongoing hearing to decide who will get custody of her remains.  —  Stern, 38, who had been Smith's lawyer and companion …

Jessica Simpson Gifts Orphanage with Wheels  —  Jessica Simpson has a big fan in Mexico: Mama Lupita, who runs the Casa Hogar Elim orphanage in Nuevo Laredo.  —  "Last week, someone asked Mama Lupita if she could use a van at the orphanage," a source close to Simpson tells PEOPLE.

SINGER'S TAKEN  —  SORRY, ladies, but Usher is officially off the block.  Sources say the R&B icon is engaged to his longtime girlfriend and stylist Tameka Foster.  "It's 100 percent official," said an insider.  The couple began dating more than a year ago, but tried to keep it quiet …

Rapper's lacrosse shtick scores no points at Duke  —  Rapper Common may face a cold welcome when he performs at Duke University's Last Day of Classes concert on April 25.  —  The rapper bad-mouthed players involved in the lacrosse team's alleged rape scandal while performing at Emory University last year.

NOT A COUPLE  —  UNFORTUNATELY for Ashlee Simpson, holding hands and making out on a regular basis with Pete Wentz still won't make you his girlfriend.  Wentz insists the two are not an item and told Rolling Stone, "Maybe in a different universe, we'd be some hot couple, but not in this one."

LOHAN SNUBS ALTMAN SERVICE  —  LINDSAY Lohan may have thought of her "A Prairie Home Companion" director Robert Altman as a father figure, but she didn't show up for his memorial service here Tuesday - and was out partying in L.A. with "Jackass" badboy Steve O instead.

Rumor Patrol: Xtina Not Pregnant, Rep Tells Us  —  Christina Aguilera is not pregnant, the singer's rep tells Usmagazine.com.  —  The statement was issued in response to magazine and newspaper reports published Wednesday claiming that the 26-year-old is expecting a child.  —  "It's all made up," the rep tells Us.

Paris Hilton Caught Smoking a Joint  —  Normally, I'd say legalize it but not in this bitch's case!  Throw the book at her!  And a rock!  And maybe some nailbombs.  Paris got caught by the paps cueing up on a spliff in her ride.  She's such a dopey ass, hoisting it up in public like that.