Amber Portwood -- All Growns Up

Two days after losing primary custody of her daughter to baby daddy Gary Shirley, "Teen Mom" star Amber Portwood partied it up with Shirley at a bar in Indiana to celebrate her 21st birthday.

Time flies.

Maria Shriver -- Pampered Lady

Former First Lady of California Maria Shriver decided to take her mind of things and treat herself to a mani/pedi at a salon in Beverly Hills yesterday.

They did such a good job, she told the ladies, "I'll be back." *rimshot!

We spotted Maria on her way out, and asked her if she was open to taking Arnold back ...

Rosario Dawson Pops Beaucoup Bottles in Cannes

Rosario Dawson was really thirsty for champagne last night.

The 32-year-old partied it up surrounded by 60 bottles of bub in Cannes on Thursday.

Santé!

Lady Gaga -- This Outfit Is Nunsense

Seeking penance for wearing those "American Idol" penis heels, Lady Gaga arrived to a London studio on Thursday ... dressed like some bizarro Catholic nun.

She's Our Lady of the Preposterous Photo Op.

Miley Cyrus -- Mommy & Me Bikini Time

Miley Cyrus, 18, and her demure back tatted winged mother Tish, 44, both bared their bikini bods on the beach in Rio on Thursday.

Birds of a feather ... sunbathe together.

Maria Shriver to World -- Read My CHEST!!

Maria Shriver and a friend fired off some advice -- possibly to Arnold Schwarzenegger -- during a stroll in L.A. today ... courtesy of their not-so deep tees.

Shriver's top said, "Change the world with your courage, wisdom and strength" -- while her friend sported the less wordy ... yet equally preachy, "Karma."

Total coincidence.

Arnold Schwarzenegger The Ring Disappears

Hours before the world knew about his separation ... Arnold Schwarzenegger broke out his street bike and went for a ride with his bodyguard in L.A. yesterday ... sans wedding ring.

But Arnold WAS wearing his ring on Sunday ... the day before the couple announced their split.

Meanwhile, Maria Shriver has been ringless since mid-March ... right after Maria posted a cryptic video on YouTube asking her fans for advice on how to "transition" into the next phase of her life.

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As you already know, Arnold and Maria announced their separation last night ... and in their statement, they claimed they've been living apart for several weeks.

It's Sarah Jessica Parker By a Hair

Looking like a "Real Housewife of New Jersey" circa 1987, Sarah Jessica Parker inexplicably teased her hair within an inch of her life to attend a charity gala in NYC on Monday.

"Sex and the City 2" is no longer the worst thing she's done.

Paul McCartney's Fiancee -- The MASSIVE Rock

Look at your knuckle ... now look at the ring on Paul McCartney's new fianceé Nancy Shevell ... it's the size of HER knuckle. Not too shabby, huh??

Shevell was sportin' her new rock out in NYC this weekend ... and if the rumors are true -- that Paul spent $650k on the ring -- lady needs to get herself a bodyguard, STAT!

Heidi Klum Bikini Bride

In Palm Beach to renew her vows to husband Seal, supermodel Heidi Klum turned the sand into a catwalk by rockin' a two piece this weekend.

Tomorrow is Heidi and Seal's 6th wedding anniversary.

Paula & Simon -- Reunited and It Feels So Good

It's been two years since they clashed on "American Idol," but Paula Abdul and Simon Cowell made nice and reunited to judge the first auditions for "The X Factor" in L.A. on Sunday.

It's as if Paula's "Live to Dance" never happened.

'Teen Mom' Amber Takes One to the Kisser

Gary Shirley and Amber Portwood put down their dukes and enjoyed a Happy Teen Mom's Day by gnawing on each other's lips in Indiana on Sunday.

And they said it wouldn't last.

'Real Housewife of Miami's Unreal Bikini Bod

"Real Housewives of Miami" star Cristy Rice showed off her dangerous curves and abs in an itty bitty bikini in Miami Beach on Sunday.

Happy Mother's Day, mamacita!

Christina Aguilera -- Dirrty

A dressed down Christina Aguilera ventured out in NYC with her boyfriend Matt Rutler.

She's a natural beauty.

'Jersey Shore' Italy Trip Delayed

Shooting for season four of "Jersey Shore" has been delayed for at least one week ... TMZ has learned.

According to our sources, the delay was caused by a "logistical problem" ... and they are expecting to be all systems go a week from today.

Both the girls and guys (with camera crews in tow) were spotted in the last 24 hours gathering to head out to Italy (see below), but those plans are on hold for now.

Zuckerberg's New Home -- You Paid $7 Mil for That?

Facebook honcho Mark Zuckerberg just dropped $7 million on a new pad in Palo Alto ... and it's nice and everything ... but $7 MILLION ... REALLY?

The 5,000 sq ft home includes a saltwater pool, glassed in sunroom, outside fireplace, 5 bedrooms and 5 baths ... but no apparent grotto, helipad or batcave.

So we gotta ask ...