Paparazzi Photo

"Modern Family" hot mama Sofia Vergara celebrated her big 40th birthday on Tuesday by rocking a sexy bikini in Mexico ... and flashing what is reportedly her new giant engagement ring.

Sofia's on-again-off-again businessman boyfriend Nick Loeb reportedly popped the question this week and gave her the huge bling during their vacation with pals on the Riviera Maya.

Sofia -- who dated Tom Cruise back in 2005, before the whole Katie Holmes thing -- has a son from a previous marriage.

Jessica Alba let all her bronzed gorgeousness hang out in a sexy two-piece bikini while soaking up the sun in Italy on Tuesday.

Just like Scarlett Johansson, the 31-year-old mother of two can definitely stomach the European heat.

It's no secret what Scarlett Johansson's super powers are ... looking ridiculously hot in a sexy wet bikini.

The 27-year-old showed off her Black Widow curves while on a yacht in Italy with a super buff man friend on Monday.

It got bumpy for a while ... but Tom Cruise has finally returned to Earth.

Moments after Tom and Katie announced they reached a settlement in their divorce ... Cruise touched down in Mammoth, CA looking ... more single than usual.

Tom is reportedly in Mammoth to film scenes for his upcoming movie, "Oblivion."

Demi was spotted on the streets of NYC just a few hours ago, walking to the set of her new movie, "Very Good Girls" ... which co-stars Dakota Fanning and Richard Dreyfuss.

For a woman whose life seemed to be spinning out of control -- divorce, medical emergency, rehab, etc. -- perhaps re-joining the work force is just what she needs.

Maria Shriver has taught her daughter Katherine Schwarzenegger everything she knows ... about getting parking tickets.

Arnold Schwarzenegger's estranged wife -- who is no stranger to parking infractions -- and her 22-year-old offspring drove separate SUVs to the same medical building in Brentwood this weekend, and upon leaving found matching mother/daughter parking tickets on their windshields.

While some women hit the clubs after filing for divorce, Katie Holmes continued to enjoy the single life by going food shopping at Whole Foods in NYC for the second time this weekend ... this time bringing Suri along for the ride.

Justin Bieber has filed a harassment complaint against one of the paparazzi who chased him down an L.A. freeway Friday -- claiming the guy was a maniac on the road ... and put several lives in danger.

A CHP officer dropped by Justin's music video shoot downtown Friday (above) -- and law enforcement sources tell us, the officer was there to take Justin's statement after the singer filed the complaint.

We're told Justin originally reached out to police following Friday's high speed chase -- because the photog in question had been extremely aggressive on the road ... much worse than the other photogs.

As we reported, the highway chase reached speeds exceeding 100mph -- with some paps even riding the shoulder to keep up with Bieber.

Cops eventually stopped the 18-year-old singer, citing him for speeding -- and we're told, that's when the Biebs filed the complaint, giving police the offending pap's license plate number.

Funny enough -- the pap in question was at Bieber's music video shoot this afternoon when the CHP officer dropped by ... snapping away.

Kate Hudson took a holiday from making all those awful romcoms to bask her mother-of-two curves in a sexy black bikini in Greece on Thursday.

Despite "Alex and Emma," "Raising Helen," "You, Me and Dupree," "Fool's Gold," "My Best Friend's Girl," "A Little Bit of Heaven" and "Something Borrowed," the fit 33-year-old has a great body of work.

Katie Holmes got an early start yesterday, hitting up a Whole Foods grocery store in Chelsea.

Despite being dressed like opposites in white and black, Kanye West and Kim Kardashian solidified their love with a very public display of affection by holding hands in France on Wednesday.

The fashion forward couple celebrated Independence Day by hitting up Paris Fashion Week with supermodel Bar Refaeli.

Despite being out of the U.S., K&K made their own 4th of July fireworks.

And now ... some photos of Hayden Panettiere in a really small, wedge-tastic bikini ... because it's summer.

Hayden hit the beach in Cabo San Lucas, Mexico this week ... showing off her tiny physique as she tanned by the pool.

George Clooney and his girlfriend Stacy Keibler got to enjoy a meal they ate in Italy this week ... twice -- because hours after eating it ... they both got a bad case of food poisoning ... this according to sources connected with the couple.

George, Stacy, and some friends dropped by a restaurant in Cernobbio July 4th -- in the same province where Clooney owns a fancy lake house -- but they quickly regretted it.

The next day, Stacy tweeted, "Finally had a bad meal in Italy, our whole dinner party got food poisoning ‪#ohwell‬ at least I'm still in Italy."

Our sources -- who are in a position to know -- tell us the entire party who dined with George and Stacy that night got food poisoning.

But the manager of the restaurant in question told us ... George and Co. must have gotten food poisoning elsewhere ... because it didn't happen at his restaurant.

Seal's officially done mourning the death of his marriage to Heidi Klum ... 'cause the singer has moved on to a smokin' hot brunette who looks damn good in a bikini ... and TMZ has the pics.

Just 3 months after Heidi filed for divorce, an extra-sweaty Seal was spotted on a yacht in Italy this week ... gettin' all kissy kissy with a mystery babe after a quick workout session on the deck.

There was cuddling ... there was smiling ... but there was no sign of Seal's wedding ring.

TMZ broke the story, Heidi decided to break off the marriage because she got sick of Seal's explosive temper. The couple later released a joint statement saying they had simply "grown apart."

Meanwhile, Heidi ain't lookin' so bad either ... and made sure the world knew it on July 4th ... when she tweeted out this photo of her insane supermodel physique.

Damn.

In an effort to prove all is well in their relationship, Justin Bieber and Selena Gomez went out TOGETHER in L.A. last night ... and made sure the cameras caught them holding hands.

As TMZ reported, the relationship has been on the rocks ... with the two breaking up multiple times in the last few months.

But last night, it appeared things were back on ... when Biebs and Gomez hit up the Pink Pepper restaurant in Hollywood for a romantic dinner date.

When asked about the status of their relationship, Bieber told the photogs, "What does it look like?"

Tom Cruise and Katie Holmes barely looked each other in the eyes on what we're told was their final meal together as a couple.

The photo was snapped on June 16th in Reykjavik, Iceland, where Tom was shooting his new movie. Katie filed for divorce in New York less than two weeks later on June 28th.

TMZ broke the story ... Tom and Katie were sleeping apart in the weeks leading up to the divorce filing. And according to her divorce docs, Katie insists her marriage had been "irretrievably broken" for at least 6 months before that.