Britney Back in Rehab  —  TMZ has confirmed Britney Spears is back in rehab.  —  We're told the singer is hoping three times is a charm.  The emergency custody hearing that Kevin Federline wanted has been cancelled because of the new development.  There will be no custody hearing today.

Lawyer sneaked drugs to Anna in hosp  —  Birkhead says Stern gave pills to pregnant bombshell  —  BY ANGELA MOSCONI in Fort Lauderdale and MICHELLE CARUSO in Los Angeles  —  While doctors tried to wean a pregnant Anna Nicole Smith off prescription drugs, her lawyer pal snuck a duffel bag …

Jimmy Fallon Said to Be in NBC's Late-Night Plans  —  NBC may be quietly looking to put some possible late-night reinforcements in place for its big transition two years from now when Conan O'Brien replaces Jay Leno as host of "The Tonight Show."  —  One move is expected to involve signing Jimmy Fallon …

Blogger Perez Sued Over Topless Aniston Pic  —  RECOMMENDED (0)  —  Universal has a boob, er, bone to pick with Perez Hilton.  —  The studio sued the celebrity-gossip blogger Tuesday for copyright infringement, accusing Hilton of posting a stolen topless picture of Jennifer Aniston …

Britney Spears' nannies are speaking out  —  Singer wanted nannies to be her friends, passed off kids after 10 minutes  —  Britney Spears' nannies are speaking out.  —  Women who were hired — or interviewed to be hired — to care for the singer's two sons say that they were asked few questions …

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."

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.

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 …

JUST ASKING  —  WHICH hard-partying celeb takes her escapades well into the next morning?  Sources saw her snorting lines at 10 a.m., but the real problem isn't coke - waitresses at Privilege overheard her demanding "meth" from her friends. . . WHICH athletic new reality show contender …

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.

Rachel Bilson: My Mom Gave Me Sex Advice  —  Some women tell their mother everything - but Rachel Bilson doesn't have to.  —  "My mom's a sex therapist, so she's great at talking about relationships," the O.C. star, 25, tells the new InStyle spinoff Your Look in its spring issue.

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.

Wicked Comes to Los Angeles  —  It sure took long enough.  The open-ended Los Angeles run of Stephen Schwartz and Winnie Holzman's Wicked — co-starring Eden Espinosa as the green-faced Elphaba and Megan Hilty as the curly locked Glinda — officially opened last night at the Pantages Theatre.