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Screw Kristen Stewart ... ROB PATTINSON HAS A NEW GIRLFRIEND -- at least that's one possible explanation for photos that just surfaced ... showing the "Twilight" actor chatting up a hot chick at a bar.

The photos were snapped Saturday night at the Electric Room bar in NYC -- and according to sources inside the establishment, Rob cozied up with the mystery blonde for hours ... even putting his arm around her at one point.

There are reports Rob and Kristen have reconciled following her cheating scandal earlier this year with "Snow White and The Huntsman" director Rupert Sanders -- but these photos might be the smoking gun that proves otherwise!!!!

Just one day after news broke of her split from longtime husband Danny DeVito, "Cheers" star Rhea Perlman stepped out in L.A. today sans wedding ring -- with a big ol' smirk on her face.

As we previously reported, 67-year-old Danny and 64-year-old Rhea are separating after 30 years of marriage. The reason for the split is still unclear.

The news came as a shock even to close friends. In fact, "Cheers" actor John Ratzenberger said he saw Rhea just the other day and she never suggested things were going south in her marriage.

While underneath a huge umbrella, Kim Kardashian and Kanye West stayed dry during a Miami downpour on Monday ... and grabbed each others' badonkadonks.

Kim was prepared for the showers by wearing her ginormous rain shades, a practical leather mini-skirt and waterproof open toed heels.

Looking even more emaciated and gaunt than before, a frail Matthew McConaughey was barely recognizable as he -- with the help of his mother Kay -- left a church in Austin this weekend.

As TMZ previously reported, the normally buff and shirtless 42-year-old is wasting away to play Ron Woodruff in the movie "The Dallas Buyer's Club," the true story of a man who contracted HIV through drug use in the '80s and has to smuggle life-saving medications from Mexico.

With her mother June taking a load off behind her, 7-year-old HBB flashed some leg during her meet-and-greet at Lucy Lu's Boutique in Douglas, GA on Saturday -- signing autographs and posing for pictures with hordes of fans.

Multi-millionaire rap icon Jay-Z made his most shocking purchase ever this weekend in NYC -- a METROCARD -- riding the subway to Brooklyn with the common folk ... moments before his big concert at the Barclays Center.

Jay and his crew took the "R" train from Canal Street in Manhattan to Atlantic Avenue in Brooklyn on Saturday to mark his final show at the new Nets stadium before basketball season kicks off this month.

It's been 4 years since Katie Couric grilled Sarah Palin about where she gets her news ... and now, we finally know -- the National Enquirer.

The former Vice Presidential candidate was hangin' out with her daughter Willow in a Kmart in L.A. this weekend ... when she decided to check out the magazine stand.

Palin eventually picked up the latest copy of the Enquirer ... possibly because the cover featured a photo of Bristol under the headline, "Plastic Surgery Shockers."

In related news, Palin also bought some toilet paper.

Klum's boyfriend/former bodyguard Martin Kristen kept a watchful eye on the kids as they loaded the cart with the moniker of Halloween.

Mirror Mirror on the car ... but not for long because Ben Affleck just knocked it off.

Ben may have been daydreaming about his "thank you" speech at the Oscars, because the distracted driver/star/director of "Argo" side-swiped a parked Honda that was minding its own business -- decapitating its side mirror.

But Ben did the right thing, leaving a note that even had a friendly salutation: "Hi, knocked off your mirror. VERY Sorry. Will cover everything. Ben."

Mariah Carey got a full police AND umbrella escort on her way out of an "American Idol" photo shoot in Baton Rouge yesterday -- 'cause the only thing more harmful than angry rappers are those damn UV rays.

Carey had told Babwa Wawa that she bulked up her security team after Nicki Minaj allegedly threatened to shoot her with a gun during their blowup earlier this week ... and Thursday she proved she ain't messin' around.

Sources tell us ... Mariah and Nicki both participated in the shoot -- and even posed for pics TOGETHER. We're told the shoot was peaceful, but it's clear the hatchet is not buried.

Tomorrow, the gang has another round of auditions ... and that's when tensions really start to heat up.

Here's the one reason you should still be watching "Glee" ... new cast member Dean Geyer's yoked body.

Flashing his ripped and hairless acting muscles, the 26-year-old skateboarded shirtless through Santa Monica on Wednesday.

Now this is something to sing and dance about.

Brown announced this morning that he kicked his GF Karrueche Tran to the curb because he wants to concentrate on his "friendship" with Rihanna ... and by "friendship" he means he's going to take her to Bone Town.

Brittany Kerr went back into the danger zone Tuesday night ... the center of the Hollywood bar scene ... only this time, the former "American Idol" contestant was spotted with a man who WASN'T wearing a wedding ring.

Chris Brown and Rihanna are barely trying to hide it anymore -- getting up close and personal at a NYC nightclub late Monday night ... then carousing at Rihanna's hotel for hours.

Chris and Rihanna hit up Griffin nightclub in the Meatpacking District -- we're told they arrived 5 minutes apart, and quickly ended up at the same table. Sources inside the club say the two were all over each other, and even disappeared together in a bathroom for 20 minutes.

People inside the club say the duo were kissing and hugging out in the open.

The two left the club separately -- but hours later, Chris was spotted leaving the Gansevoort Hotel, where Rihanna was staying.

By the way, Tuesday afternoon, Chris' clueless GF Karrueche tweeted that Chris sent her roses, a teddy bear and chocolates -- maybe a lame, "I'm sorry."

So we gotta ask ...

Minka Kelly and Chris Evans proved they're more than just friends by swapping spit outside a restaurant in Studio City on Monday.

The sexy couple -- who dated briefly in 2007 -- have been spotted hanging out together in recent weeks, but this is the first time they've gotten hot and heavy in public.

Prior to hooking up with Captain America, 32-year-old Minka broke up with her longtime NY Yankee boyfriend Derek Jeter last year.

She really knows how to play the field.

Halle Berry and Gabriel Aubry have apparently put their custody war on hold ... to honor the sacred tradition of Halloween pumpkin carving.

The two were spotted at a pumpkin patch in Moorpark, CA today -- with Halle walking Nahla around the grounds to hunt for the perfect gourd.

According to multiple photo agencies, both Halle and Gabriel were at the patch AT THE SAME TIME ... however, we have yet to see a shot of the battling exes in the same frame.