Baby Watch

Ashlee Simpson's coming out ... she wants the world to know ... that Diana Ross is her mother-in-law -- so she's legally taking her name, or she's trying to anyway.

Here's the deal -- yes, Ashlee married Diana's son Evan Ross back in August, but legally his name is Evan Naess ... his father's last name. Now, Evan and Ashlee want to leap into Rossville together.

They've filed a request to change their last names to Ross-Naess. Why the switch? They are expecting their first child, but since they already have the same last name -- Naess -- that can't be it.

This appears to be purely about giving mama D some props ... officially.

Hayden Panettiere can't escape the laws of physics -- birthing Wladimir Klitschko's baby did some permanent damage to her bod.

Hayden copped to the ordeal of bringing Kaya Evdokia into this world with People ... saying, "I'm limping around. I'm still trying to figure out what [pregnancy] has done to my body, how it's changed it."

As for recovery ... she added, "I know some things will never be the same again."

Sounds about right -- Kaya was 7 lbs., 14 oz. and damn near 2 feet tall. Hayden's only 5 feet tall.

10:00 AM PT -- Clooney's rep tells TMZ, Amal is NOT pregnant.

George Clooney broke his vow by taking one ... and MAYBE the reason is becoming apparent.

Amal Clooney and her husband were leaving Soho House in West Hollywood when a photog took the pics this weekend.

George -- who said he would never marry again -- is unwaveringly silent about stuff like this -- but the photos are definitely interesting.

Blake Lively doesn't need a sexy black dress for slimming effect -- 'cause even with a big ole bun in her oven ... she's a total smoke show.

The ex "Gossip Girl" flaunted her belly at a L'Oreal event in NYC last night ... creating a dilemma for all those fans who drooled over her bod long before Ryan Reynolds knocked her up about 5-6 months ago.

Kourtney Kardashian had the stomach to pose naked for Dujuor magazine.

Kourtney -- who is ready to pop with her third kid -- tried to one up Kim. When you break it down limb by limb ... she really looks amazing ... shades of Demi Moore.

Your move, Khloe.

It's got to be Jennifer Aniston's worst nightmare ... another Angelina Jolie may be walking the face of the earth soon, because someone's in the market for an Angelina egg donor.

The UCLA Daily Bruin ran a classified ad Friday seeking an egg donor who looks like Brad Pitt's newly-minted wife.

The company that placed the ad -- Beverly Hills Egg Donation -- presumably has a client who wants their kid to be an outlier.

The ad is specific ... white, tall, slender, the right cheekbones and forehead. Anyone with the right stuff can make $30K for 2 cycles.

Hayden Panettiere and boxing champ Wladimir Klitschko are expecting their first kid ... and after seeing her in Hawaii, flaunting a womb the size of Oahu -- ya gotta wonder: Is she going C-section or pushing and praying for dear life?

Our advice: Don't be a hero, Hayden.

Scarlett Johansson is looking to rekindle an old romance ... not Ryan Reynolds -- looks like she's moving back to L.A.

Real estate sources tell TMZ ... "The Avengers" actress scoped out a Spanish-style home last weekend in Los Feliz ... the same area where she and Reynolds lived. When they broke up, they sold the house.

Johansson is currently living in NYC with fiance Romain Dauriac.

Our sources say she passed on the $2.9 mil Los Feliz property after spending close to an hour there. It just wasn't private enough for her.

Kim Kardashian just revealed the whole enchilada.

More pics just surfaced from the Paper Magazine photo shoot with famed photog Jean-Paul Goude. The pics were taken in Sept. during Paris Fashion Week.

We've learned this pic was taken after the now-famous ass photo, when Kim decided to put everything on display.

As we reported ... this is Kim's last stand before getting pregnant again, which she plans to do shortly.

Her big thing was to show the world how she bounced back after giving birth to North West.

Kim Kardashian shot the instantly iconic ass photo because it's her last stand before getting pregnant again ... TMZ has learned.

We know Kim is telling close friends and family she's about to get pregnant again, and wants to show off her body before the weight gain. She's proud she dumped the weight after North was born and wants to show her tight figure off.

As for Kanye ... we're told he's the opposite of jealous. He loves her public displays.

Our sources say there were a number of pics the photog took and they will be released soon. The photog -- Jean-Paul Goude, is famous for shooting nude celebs, including Naomi Campbell.

The Kim pic is actually a recreation of the famous champagne photograph that Goude shot in 1976. The model is Carolina Beaumont.

Goude shot a similar pic of Grace Jones. And get this ... another photog copied the Grace Jones pic, using Amber Rose as the model. Amber, of course, was Kanye's GF before he hooked up with Kim.

And we're told ... this will not be the last nude photo shoot before Kim gets pregnant again. She plans a few more, but it'll happen soon because she wants baby #2.

"X-Men" director Bryan Singer was gleeful Sunday, as he attended a baby shower for what will be his new son.

Singer is having the baby with longtime friend Michelle Clunie ... whom Singer says he once dated. They plan on raising the baby together and he even bought her a home just a few houses down from him in West Hollywood.

Singer's an advocate for having babies this way ... hopefully it will end up better than the Clay Aiken situation. He's at war with his former friend/baby mama Jaymes Foster.

As for the sex of Singer's baby ... he was mum but his friend may have blown Singer's cover as they walked into the party.

Stevie Wonder says he's not a triple threat ... but he is a single threat in the baby dept. ... he's having 1 kid -- not 3.

It was widely reported Tuesday that Stevie and his girlfriend Tomeeka Robyn Bracy are expecting triplets but Stevie's rep tells us it's just not true. She's pregnant with 1 child ... a girl due in December who'll be named Nia.

Stevie will add the new addition to his fold of 8. His kids range in age from 1 to 39.

Congrats!

The King of the NBA now has a Princess in his realm ... with LeBron James welcoming his first baby girl to the world.

The 4-time NBA Most Valuable Player and his wife Savannah welcomed their 3rd child last week at a hospital in their hometown of Akron, Ohio.

Zhuri James is not the heir to the NBA throne ... LeBron already has 2 boys ... but something tells us WNBA officials are already looking 21 years down the line.

The couple announced the name back in August while on vacation in Greece.

Mazel tov!

"X-Men" director Bryan Singer will raise his baby with the woman who is carrying it ... TMZ has learned.

Turns out, sources familiar with the situation tell us ... Michelle Clunie will raise the baby as her own after he or she is born. She will be listed as the mother on the birth certificate. She is NOT a surrogate.

We're told Bryan and Michelle have been friends for years and he's wanted this baby for a long time.

Our sources say the 2 are not romantically involved, but rather extremely close friends.

Contrary to reports, we're told Michelle will not get paid for carrying the baby, but Bryan will cover living expenses ... which is roughly equivalent to informal child support. He's already purchased a place for her to live just doors down from his West Hollywood home.

And our sources say ... the decision to have a baby was made long before Michael Egan accused Singer of molesting him when he was a minor. Egan dropped his lawsuit against Singer.

"X-Men" director Bryan Singer is having a baby ... and the baby mama is his longtime friend ... TMZ has confirmed.

Michelle Clunie is now living a few houses away from Singer ... something he clearly wanted because he bought the West Hollywood pad so she could be close to him.

Our sources say she's around 7 months pregnant.

We're also told the decision to have a baby has nothing to do with the recent accusations by a man who claimed Singer sexually assaulted him when he was a minor ... something Singer denies. The accuser dropped his lawsuit against Singer.