Britney Spears is twerking it out!

A sweaty Britney Spears was spotted leaving a dance studio in Los Angeles on Thursday. It looks like Britney is getting ready (along with all of us) for the big announcement about her residency deal in Las Vegas. And we can't wait!

The 31-year-old pop icon was outfitted in a pink tank top and grey sweats and was sipping on some Starbucks. This morning, Good Morning America announced that the "Circus" singer will be performing live on the show on Sept. 17.

And while we're eagerly anticipating her duet with Miley Cyrus on Bangerz, we are even more stoked on her probable Vegas residency at the newly revamped Planet Hollywood.

There are many clues that the Sin City deal is going down: Caesars Entertainment has reportedly invited employees to "come play a part in the biggest announcement in Las Vegas Entertainment History" on September 17, which, oddly enough, is the same date that BritneySpears.com is counting down to for that whole #AllEyesOnMe hoopla AND that's also the day the "Toxic" singer will be appearing on GMA. Coincidence? We think not.

Also, more proof: BreatheHeavy reports that participants in the Vegas event are being told to meet at Planet Hollywood to be shuttled to an undisclosed location and to "expect this event to generate global media attention." If we were detectives -- we think this case would be closed.

In the meantime, we are glad that BritBrit is working it out on the dance floor. But enough of this mystery already --we just wanna know!

Leonardo DiCaprio covers the new issue of New York Magazine, and the 38-year-old star talks all about his highly-anticipated film The Wolf Of Wall Street.

DiCaprio plays Jordan Belfort, a mega wealthy stockbroker whose high life came crashing down when he was found guilty of various crimes involving stock market manipulation. In between making money and going to jail, Belfort struggled with a drug addiction and apparently had lots of sex, and Leo opens up about some of the more controversial scenes in the Martin Scorcese-directed flick.

Of getting to know Belfort, DiCaprio said:

"I wanted a close relationship with him so that I could weave intimate details into the movie ... things that weren’t in the book. I was kind of the middleman between him and Marty, and I would bring pages of notes from my meetings with Jordan—things like this insane orgy on a 747 going to Vegas, chimpanzees in diapers that would skate through the Stratton offices, very intimate stuff about his relationships with women -- and Marty was game to try everything."

In another notable scene, "a coked-up Belfort furiously dry-humps a first-class stewardess on a flight to Switzerland," writes NY Mag, but this one of the tamer plot points! “It’s a modern-day Caligula,” says DiCaprio, “the height of debauchery.”

When screenwriter Terence Winter was asked about the craziest/most memorable scene in the movie, he replied:

"There’s a scene where Donnie [Jonah Hill's character] and Jordan take a lot of vintage quaaludes from the eighties. It takes a while for them to kick in, so they keep taking more ... DiCaprio and Hill on drugs rival Laurel and Hardy. When my wife read the scene, she was nursing our newborn son, and she nearly dropped the baby she was laughing so hard. You alternate between enjoyment and thinking, When is it going to stop? How can they possibly survive this?"

We can't wait to find out! The film hits theaters on November 15.

Monkeys and tigers and elephants -- oh my!

Have you been dying to check out the full official music video for Katy Perry's biggest hit Roar? We thought so because so have we!

“It’s HERE! Filmed in Junglescope – my brand new music video,” the 28-year-old singer tweeted earlier today.

In the four and a half minute video, Katy's plane crashes in the middle of the jungle and the "Firework" singer must learn how to fend for herself. Can the "Teenage Dream" singer make it out alive? Of course! Katy becomes the queen of the jungle in the fun-filled video chalk full of adorable pals from the animal kingdom. You can even see the sexy singer rocking a leopard-print bra top in this music morsel.

This week, John Mayer's main squeeze finally kicked the played-out "song of the summer" "Blurred Lines" off the No. 1 slot off the Billboard Hot 100 chart. Keep it going Katy!

The California gurl's fourth studio album, Prism, drops Oct. 22.

Julianne Hough and her new beau Ari Sandel stepped out for coffee with their dogs on Thursday morning, and while the former DWTS pro was in a great mood, her director beau looked a bit grumpy. Maybe he's not used to being photographed so early in the morning?

The duo have been together for about two months, and from dinners out to brunch dates, they have been joined at the hip lately. Julianne split from longtime beau Ryan Seacrest back in March, so we're not sure if Ari is just a summer love or hubby material, but it's good to see her smile!

Despite a report last night that Lamar Odom had checked into rehab, TMZ is now saying that the troubled NBA star has NOT entered a treatment facility ... instead, the site claims he's gone "off the radar"!

Apparently Odom hasn't been in touch with the Kardashian family for the last few days, and though People magazine had two separate sources confirming that the athlete was in rehab, the location was never reported.

Odom's rep never confirmed the news, but after the NBA star was arrested last Friday for D.U.I., it seemed totally plausible. Just days before Odom's arrest, his teammates and agent attempted to have an intervention, but he reportedly left and didn't want their help. However, the very next day Lamar spent the night with estranged wife Khloe Kardashian at the couple's Tarzana mansion, and Khloe has been seen with her wedding ring back on. While things appeared to be looking up, last month X17 photographers snapped momager Kris Jenner meeting with family lawyer and high-profile divorce attorney Laura Wasser, who handled Kim's split from Kris Humphries.

So what's going to happen next? And where in the world is the basketball star!? Stay tuned...

We still can't believe this guy is playing the lead in Fifty Shades of Grey! Don't get us wrong ... we LOVE Charlie Hunnam's dirty hot biker character on Sons of Anarchy (he's the main reason we watch the hit FX show!), but we are still having a hard time picturing the scruffy British hunk as the S&M loving millionaire Christian Grey.

But maybe after a shave and a haircut (not to mention a dye job) plus a tailored suit, we can? He's undeniably handsome and he looks great without a shirt, so we have a feeling as soon as he starts shooting the film, we'll be 110% behind this.

The sixth season of SOA will premiere on Tuesday, September 10, and the seventh season will be the show's last. So how does Charlie feel about crossing over from biker boy to kinky businessman? One of our videographers asked the star how he's going to prepare for the sex scenes, and he smiled and seemed a bit embarrassed about it. He better be ready to bust out the whips and chains! Click the video below to see what else he had to say while spending some quality time with his fans:

Take that Kardashians! For the second year in a row, Sofia Vergara has beat out the Kardashians as the No. 1 highest paid television actress according to Forbes. Yes, we are surprised Forbes considers the Kardashians -- but we didn't make the rules, we only report on them! Modern Family's sultry star reportedly earned $30 million last year (thanks largely to her bilingual endorsements) -- put her light years (aka millions and millions of dollars) ahead of the acting competition. The sexy Columbian's exorbitant earnings come from her work on the hit ABC as well as several very lucrative endorsement deals. Looks like Diet Pepsi ads pay beau-coup bucks!

The 41-year-old Colombian has been called, "the reigning queen of celebrity endorsement deals" by Forbes.

The SAG award winner has endorsements with Kmart, Covergirl, Rooms To Go, a thyroid medicine called Synthroid, Diet Pepsi, Sears, Comcast, Statefarm insurance and even a Spanish-language laundry detergent. What can't this woman sell?!

The native Spanish speaker's No. 1 ranking is mostly due to her bilingual ads. The actress has doubled up for her Diet Pepsi and KMart ads in both English and Spanish. Sears, which is one of her biggest paychecks, gave the actress a $7 million dollar advance in 2012 as the company is currently trying to target the Hispanic demographic.

Other women on Forbes' list include Law and Order: SVU star Mariska Hargitay and Big Bang Theory's Kaley Cuoco, who share the No. 2 slot by each pulling in $11 million. That's pretty impressive -- but it ain't no Sofia money! The Kardashians (Khloe, Kim and Kourtney) each pulled in 10 million, which puts the sisters tied in fifth place.

Modern Family's fifth season begins September 25.

Rihanna did dinner with a girlfriend at Da Silvano in New York City last night, and even though she kept it casual in a pair of denim cutoffs and a white tank, she looked stunning! RiRi accessorized with a Teenage Fantasy baseball hat and a super-sized pair of hoop earrings, and she also gave us a peek at her boobie bling:



Later on, the 25-year-old R&B superstar tweeted, "Tonight with my bestfriend @leleboo246 #stripclubzanddollarbillz," along with a flyer for an event at a gentleman's club in Queens. Not like we're surprised though -- RiRi loooooves the strip clubs!

But what about the men in her life? Rihanna is reportedly back with Drake! Well, maybe. A source for Life & Style spotted the two at dinner last month in N.Y.C. and "they seemed really close ... and even shared a kiss.” However, shortly after that the two had a fight, so maybe that's why stepped out wearing a chunky gold necklace from ex-boyfriend Chris Brown on Tuesday? Just wondering...