Rebecca Romijn and Jerry O'Connell Expecting Twins!  —  Rebecca Romijn and Jerry O'Connell will soon be on double diaper duty.  —  Us Weekly has learned that Romijn, 35, and O'Connell, 34, are expecting twins this winter.  —  A spokesman for the couple confirmed the news Monday morning.

John Mayer Talks Sleeping Arrangements - While Jen Looks On  —  It's official: Jennifer Aniston is a John Mayer groupie.  After trekking with him to shows in Michigan, Wisconsin and St. Louis this month alone, she put in another low-key appearance Sunday night in Irvine, Calif.

Bikini Britney tangos poolside with a mystery man in Mexico  —  With her custody drama with Kevin Federline finally over, Britney Spears is back in shape and ready for fun.  —  The pop star escaped to Cabo San Lucas in Mexico for a sunshine holiday with a group of friends …

Seacrest's Freak Accident!  —  Ryan Seacrest was bit by a shark this past weekend.  For real!  —  Thankfully, the accident was nothing too serious.  —  We're told that the Idol host was at a nearby beach in the L.A. area when he was bit by a baby shark on his foot.

Shia Needs a Hand ... And About a Month Off  —  Shia LaBeouf's weekend car crash is going to piss off fan boys big time.  —  His hand surgery is serious enough that the “Transformers 2” star is going to miss filming on the sequel for nearly a month.  His rep released a statement that reads …

Airbrushing?  No cans do, Keira says  —  Keira Knightley's bosum was enhanced in photos for 2004's ‘King Arthur.’  —  We'll always have “King Arthur.”  —  Keira Knightley has refused to allow any enhancement of her cleavage on publicity photos for her upcoming movie, “The Duchess,” Britain's Daily Mail reports.

Cops to Shannen Doherty: 9021Who  —  That new “90210” show can't come along fast enough for Shannen Doherty.  —  We know Shannen went to the Sheriff's Department in Lost Hills (Malibu) to complain about paparazzi following her.  The cops who talked to her were baffled ... because they had no idea who she was.

Panettiere strips for ‘Heroes’ lover  —  Hayden Panettiere apparently performed a birthday striptease for boyfriend Milo Ventimiglia on the set of Heroes.  —  Panettiere reportedly ripped off a Velcro-lined version of her cheerleader outfit to reveal red lingerie while serenading Ventimiglia, who had turned 31.

TRUE ‘GOSSIP’  —  REAL-life lovers Penn Badgley and Blake Lively are heating up the set of “Gossip Girl.”  “It's gotten crazy, they are all over each other after every single take,” said one spywitness.  “They're constantly making out, and it's making everyone uncomfortable.”

‘Informant’ star Matt Damon blabs about weight, kids, charity  —  For Matt Damon, this summer has been one of gains and losses.  —  He's preparing for the birth of his second daughter, helping launch a charity and hoping for some major reductions around his waistline.

Spitzer Scandal Call Girl Ashley Dupre Weighs $2M Offer; Married Man Admits Affair  —  Eliot Spitzer scandal call girl Ashley Dupre is weighing a $2 million deal offered by a veteran reality-show producer that could cast her as “a kind of Dr. Phil,” the New York Post reported.

Kelsey Grammer Hospitalized  —  Swing Vote star Kelsey Grammer has been hospitalized in New York.  —  “Kelsey felt faint last night so he went to the hospital to have things checked out,” his rep tells Usmagazine.com.  “They are altering his medications.”  —  He is expected to be released Tuesday, his rep adds.

Exclusive: Rosie's New Show  —  We know a little bit more about Rosie O'Donnell's potential new show for NBC.  This is thanks to our pals at the network and not Rosie, who's keeping mum on all news this time around.  —  What I'm told is that Ben Silverman and Jeff Zucker like the idea …