Usher Sex Tape for Sale  —  A sex tape featuring Usher and his ex-wife, Tameka Foster, is being hocked around town ... TMZ has learned.  —  TMZ was approached several days ago by someone claiming to have the sex tape.  The person sent us a short video and two photos.

Mila Kunis ‘Had Nothing to Do’ with Justin Timberlake & Jessica Biel's Split  —  Just days after Justin Timberlake and Jessica Biel announced their split, there is already speculation that the singer-actor's Friends with Benefits costar, Mila Kunis, was the cause of the break-up.

Charlie Sheen's Twin Sons Turn 2 With “Lavish” Backyard Affair  —  Charlie Sheen's twin sons celebrated their second birthday Sunday with a lavish backyard bash attended by celebrity guests like Nicky Hilton, David Katzenberg and Adrienne Maloof — but the troubled actor failed to snag an invite.

EXCLUSIVE: Ryan Phillippe to Be a Dad Again?  —  Ryan Phillippe might have to prep for round three of Daddy Duty!  —  The actor, 36, who already has two kids with ex-wife Reese Witherspoon, may become a father again — so says his ex, pregnant model-actress Alexis Knapp, who claims she's carrying his baby.

FIRST PIC: Britney Spears Reunites With Her Ex Kevin Federline  —  Nothing awkward here!  —  On Sunday, Britney Spears and ex-husband Kevin Federline reunited for the second weekend in a row to watch their eldest son Sean Preston, 5, play baseball with Westhills Yankees, his Little League team.

EXCLUSIVE INTERVIEW: Russell Brand Addicted To Women, Drugs And... Dead Animals — Author Reveals In New Book  —  Russell Brand is a self confessed past drug addict, alcoholic and womanizer — but who knew about his other, secret obsession — dead animals?  —  Famed rock ‘n’ roll author …

Josh and Anna Duggar Expecting a Son  —  Hollywood isn't the only place being hit with baby fever: Arkansas is getting its own baby boom thanks to the Duggar family of ‘19 Kids and Counting’ fame.  —  Josh, 23, the eldest child of the Duggar clan, and his wife, Anna, 22, are expecting their second child this summer.

Lisa Rinna and Star Jones Got ‘Ugly’ Behind the Scenes of ‘Apprentice’  —  Lisa Rinna felt the underside of Donald Trump's boot last night on ‘Celebrity Apprentice,’ and the bad blood between her and Star Jones, the mastermind behind her defeat and the first to throw her under the bus during the episode, could not be any uglier.

Friend: Charlie Sheen Also Has Some Advice for Alec Baldwin  —  It should come as no surprise that the latest troll making Charlie Sheen's s**t list is none other than Alec Baldwin, who pointedly advised the out-of-work actor in a blog post on Friday to “Take a nap.  Get a shower” and “Sober up.”

Stalker Arrested After Breaking In To Madonna's London Home  —  An intruder was arrested on Saturday after allegedly breaking in to Madonna's multi-million dollar London home.  Grzegorz Matlok was wrestled to the ground and detained by bodyguards inside Madonna's Marylebone mansion at 5:30am on Saturday …

Lindsay Lohan — Another Vice Bites the Dust  —  Lindsay Lohan has quit smoking — a great move for her health ... whether there's a jail sentence for probation violation on her horizon ... or not (as she continues to believe).  —  Sources close to Lindsay tell TMZ she's continuing on the path …

Ashlee Simpson, Pete Wentz Have Back-to-Back Fast Food Reunions  —  Maybe this marriage can be saved . . . by burgers and burritos?  Despite their divorce filing last month, Ashlee Simpson and Pete Wentz didn't keep their distance this past weekend.  —  Simpson, 26, and Wentz, 31 …

Tyra Banks Is Attending Harvard Business School  —  Tyra Banks is going back to school, and not just any school: The super-model-turned-mogul has been attending Harvard Business School since last year.  —  But why did Banks, who runs a successful multi-million-dollar empire, feel the need to further her education?

After Sienna, Jude's back with another old flame  —  His decision to rekindle his romance with Sienna Miller ended in failure.  But that hasn't deterred Jude Law from reuniting with another old flame.  —  Just weeks after splitting from actress Miss Miller, Law has been linked with his former girlfriend, Lily Cole.