Baby Watch

Chris Hemsworth and his wife are at Cedars Sinai Medical Center right now giving birth to twins ... TMZ has learned.

It's ultra-high security in their hospital suite ... we're told 2 security guards are standing at the door. Chris is strolling the hallway and is being escorted with a guard.

Chris and his wife Elsa Pataky already have one baby -- India Rose Hemsworth who is now 22 months old. She's about to have a couple new siblings.

Ciara's baby won't be born for another month ... but she's already taking steps to make sure the kid appreciates the world of animals ... so she dropped $20K on an animal-themed nursery.

Our baby spies say Ciara and her fiance Future dared to shop at pricey Petit Tresor in L.A. ... dropping $1,800 on an 8-foot stuffed giraffe. They spent the balance on other stuffed animals, lion book ends and art work.

Ciara's been on a spending spree ... she was recently out shopping at another high end baby store with Kim Kardashian.

FYI - A REAL safari costs around $1,000 a day.

Kevin Federline has his very own first wives club -- Britney Spears (wife #1) and Victoria Prince (wife #2) got on like a house on fire Sunday ... laughing and chatting at Britney's son's soccer game.

It was the ideal picture of divorce -- Kevin and Britney (who split in 2006) each took their significant others to their son Jayden's soccer game in L.A. Britney took her current boyfriend David Lucado ... and Kevin took his pregnant wife Victoria.

As we reported, even Kevin and David are pals.

Forget the Oscars, Scarlett Johansson has an even bigger award on the way ... she's preggers ... and we're told pretty far along.

Sources close to Scarlett and fiance Romain Dauriac tell TMZ, the "Her" actress is roughly 5 months pregnant.

The 29-year-old Johansson got engaged to Dauriac -- a French journalist -- last September, but Johansson's in no rush to get married.

You'll recall, Johansson was previously married to Ryan Reynolds ... they got divorced in 2011 after about 3 years of wedlock.

Snooki is plumping up again ... but not 'cause she's eating too much -- the "Jersey Shore" store is having another baby!

Snooks is reportedly a few months pregnant but is keeping things under wraps so it doesn't torpedo some lucrative appearances she has lined up -- according to Page Six.

Sources close to the couple told TMZ a similar story this week ... but we got radio silence from her camp.

Christina Aguilera pregnancy by Matt Rutler was no mistake ... it was precisely planned as the final domino in an elaborate plot!

Her ultimate goal is still up for debate, but his goal's pretty obvious. Way to go, Matty!

Christina Aguilera knows how to keep things interesting -- it hasn't even been a week since she announced her engagement to a production assistant ... and now she's pregnant.

Christina and soon-to-be baby daddy/husband Matt Rutler met on the set of the 2010 film "Burlesque," where he worked as a P.A. And things heated up from there.

Aguilera announced they were engaged on Valentine's Day.

Christina gave birth to her first child -- Max Bratman -- in 2008.

Pretty crazy timing ... Aguilera lost a ton of weight just last year.

Simon Cowell's baby mama better tighten up her lady parts ... 'cause the "X-Factor" judge just landed in New York -- and he's making a beeline for the hospital.

We broke the story ... Lauren Silverman went into labor early Friday morning -- and Simon rushed home from London to be there -- but based on his look in the pic ... the soon to be dad doesn't look too worried about missing things.

Something tells us he won't be filming the gruesome process.

7:25 AM PT -- Daddy's gonna make it ... our maternity sources tell us Simon is zipping across the pond right now, and Lauren is early enough in labor that docs will delay the birth until he arrives.

Simon Cowell's first baby is on the way -- his girlfriend Lauren Silverman is in labor, and has checked into a New York City hospital ... and Simon is racing to get there before the kid arrives.

Sources close to Lauren tell TMZ she went to Lenox Hill hospital in Manhattan (Upper East Side, of course) within the last few hours -- and immediately sent up the baby signal ... alerting Simon to get on a private jet bound for NYC.

He's been in London shooting one of his competition TV shows.

If Lauren has the baby today -- they're expecting a boy -- we're told she'd be about a week and a half early, but it's nothing to worry about.

Happy Valentine's Day, Simon.

Story developing ...

There seems to be a conflict in the Sheriff's Dept. A Dept. rep told us earlier the officers were on duty, but we just got a call from the Capt. at the West Hollywood station who says the deputies were all off duty and hired by a production company.

Kim Kardashian and Ciara got as much law enforcement attention as Rodney King on Wednesday ... as they shopped for baby clothes.

Kim and Ciara were leaving Bel Bambini ... a high-end baby store on Robertson in L.A. -- as 5 (FIVE) L.A. County Sheriff's deputies flanked them as they made their way to their cars.

So the question -- What the hell? We called the Sheriff's department and they said they had no answer.

"Saturday Night Live" star Kenan Thompson has just been cast in the biggest role of his career -- daddy -- his wife is pregnant with their first child ... TMZ has learned.

We're told Christina Evangeline is a little more than 4 months preggers ... and they already know the baby's sex .... and it's not a boy.

We're told the couple -- who married in 2011 -- have been trying to get pregnant for a long time.

'Memba when Kenan was just a babe himself?

Ciara is so protective of her unborn child ... she had a 'baby clause' written into her baby daddy's tour contract ... TMZ has learned.

Ciara -- who's engaged to rapper Future -- just announced her pregnancy, but people in Future's camp have known about it for months.

We're told Future's tour contract called for a "clean" backstage environment whenever Ciara traveled with him -- no smoking, healthy foods and nothing that could be detrimental to her pregnancy.

Our sources tell us Ciara is about 7 months pregnant. Turns out the tour contract may have been for naught -- she only attended two concerts because of horrible morning sickness.

This is Ciara's first child. Future has 3 other children ... with 3 different women.

Emily Blunt is spending more on her unborn baby than the yearly income of a family of 6 living ABOVE the poverty level.

We're told Emily and hubby John Krasinski are having a little girl ... and she's coming into the world in gargantuan style.

Our shopping sources say ... on Tuesday Emily dropped $35K at Petit Tresor on pricey Robertson Blvd. in L.A.

"Burn Notice" star Seth Peterson proudly plastered his new 22-year-old girlfriend all over the Internet -- which normally would be fine ... except he's still got a wife ... who's about to give birth.

TMZ broke the story ... Peterson's wife Kylee Cochran just filed for divorce, claiming her 43-year-old husband bailed on their 12-year marriage in September (when she was just 3 months pregnant with their 3rd kid) to shack up with Miranda Doerfler, a 22-year-old aspiring writer.

Miranda has since posted photos of herself with Peterson all over Facebook, writing captions like, "Okay. Officially. Seth Peterson and I are a couple."

One of Miranda's friends commented, "I thought he was married." And Miranda responded, "Lol, yeah" ... meaning, he WAS. Rhymes with witch.

Arnold Schwarzenegger is officially in the penis enhancement business ... at least according to Tom Arnold, who says his junk looks BIGGER now because of all the weight he lost using Schwarzenegger's supplements.

As we reported, Tom says he lost 90 pounds in a matter of months thanks to exercise and diet -- including Schwarzenegger's new line of supps -- but added the biggest benefit was in his pants ... because now his penis looks bigger.

"Burn Notice" star Seth Peterson's a reckless druggie who abandoned his pregnant wife for a 22-year-old woman ... so claims his pregnant wife ... and now, shocker, she's filing for divorce.

Kylee Cochran filed the docs in L.A. citing irreconcilable differences. She says 43-year-old Seth bailed on their 12-year marriage in September to shack up with his 22-year-old side piece, while his wife was 3 months pregnant with their third child.

Kylee is now 7 months pregnant and wants a judge to give her full physical and legal custody of their kids, including their 5-year-old son and 8-year-old daughter. She claims Seth is already okay with this, and agreed to give up all custodial rights.

Kylee says she's open to giving Seth visitation, but only under supervised conditions, given his alleged past drug use.

And she wants spousal support -- if she's telling the truth, it's only fair.

Calls to Seth weren't returned.