Stephanie Birkitt: Letterman's Former Lover, Assistant (PHOTOS, VIDEO, INFO)  —  WHAT'S YOUR REACTION?  —  Stephanie Birkitt has been identified as one of the women involved in the David Letterman extortion plot.  —  Birkitt, Letterman's former assistant who has made several appearances on the …

Beyonce's Dad Slapped with Paternity Suit  —  TMZ has learned a woman has filed a paternity case against Beyonce's dad, Mathew Knowles.  —  We've learned Alexsandra Wright filed the case in L.A. County Superior Court.  Wright lives in L.A. — she works in the name-branding business.

‘HIMYM’ exclusive: Rachel Bilson cast as you-know-who?!  —  In what could turn out to be the mother of all casting scoops, Rachel Bilson has landed a pivotal — some would say legendary — role in How I Met Your Mother's 100th episode.  —  Last month, exec producer Craig Thomas told …

UNHCR Goodwill Ambassador Angelina Jolie urges the world not to forget Iraqi refugees  —  UNHCR Goodwill Ambassador Angelina Jolie called Friday on the international community not to forget the hundreds of thousands of Iraqi refugees who remain in exile despite a relative improvement in the security situation in their homeland.

Kate Gosselin's Lawyer: Jon Can't Stop Reality Show  —  A lawyer for Kate Gosselin says her estranged husband Jon won't have much luck halting production of the TLC show, Kate Plus 8.  —  “These parties entered into an agreement once the divorce action was filed that allowed each parent …

Kanye West — They're Just Not That Into You  —  If Kanye West doesn't regret hijacking Taylor Swift, he will now — we're told his concert tour with Lady Gaga was scrapped because ticket sales sucked.  And “sucked” happens to be a nicer version of the word we were told.

Names to watch  —  Britney Spearshas been traveling under a number of aliases over the years.  —  Steve Dennisreveals in a new biography, “Britney: Inside the Dream,” that her favorite fake names include Ms. Alotta Warmheart, “because she had such a warm heart”; Mrs. Diana Prince in honor of Diana …

Megan Who?  Kate's Esquire's ‘Sexiest’  —  Hollywood and the media has been so obsessed with Megan Fox when it comes to sex appeal lately that many other actresses have slipped into the background.  Well, Esquire is doing their best to cage the Fox by making a bold statement with their pick …

Kim Kardashian Calls Herself an Entrepreneur  —  Even when she's sick, Kim Kardashian isn't one to take it easy.  —  “You can turn up the radio so you don't have to hear my blow my nose,” the go-getting star tells November's Cosmopolitan while on her way to take a hike in L.A.

Madonna: Jennifer Lopez Gave Me “Super-Sharp Looks” at Concert  —  Madonna thinks Jennifer Lopez wants to copy her moves.  —  Madonna, 51, says on Ryan Seacrest's KIIS-FM radio show (via JustJared.com), “I was getting super-sharp looks from [Lopez]” at one of her concerts.

Solo in the City  —  Whenever I'm asked to define today's Honey girl, my quick, canned response is: “We're more Solange, than Beyonce.”  Now don't get me wrong, Honey hearts Queen Bey (the supernova keeps us perpetually entertained and inspired) but we tend to identify with the 23-year-old rebel …

Lauren Conrad Admits She's One Bad Actress  —  Though her days of battling Kristen Cavallari and Speidi in the realm of reality TV are officially behind her, no way is Lauren Conrad headed for the unemployment line.  But she doesn't expect to run up the aisle to collect an Oscar, either.

Joe Jackson to Branca: ‘Mr. Who?’  —  Joe Jackson just arrived at the L.A. County Courthouse in the Michael Jackson probate case.  —  As we first reported, we expect some family members along with attorney Brian Oxman and possibly Katherine Jackson's lawyers, to challenge John Branca as the named co-executor in Jackson's will.