Rihanna has released her latest single "You Da One" which will be featured on her upcoming album Talk That Talk. Yet another catchy track!

The full CD doesn't hit stores until November 21, but at least we get a taste of what to expect.

This is RiRi's sixth studio album!

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Lady Gaga is rocking hospital chic in her latest video for Marry The Night. Although the full video has yet to be released, the eccentric singer Tweeted the above image of herself on a gurney from the shoot. Hmm ... we think it may actually be her alter ego Jo Calderone.

Along with the photo, Gaga Tweeted:

"It's not that I've been dishonest, it's just that I loathe reality."

Gaga reportedly has been shooting scenes for the video in various locations in New York including the Snug Harber Cultural Center on Staten Island.

Can't wait to see the finished product!

Heidi Montag has taken a break from the media spotlight, and looks like it's done her a world of good.

The former reality star looked easy, breezy and (yep, dare we say) beautiful while heading to lunch in Santa Monica. We kind of love the irony of Converse Chuck Taylor Shoes ... and a Chanel wallet. Oh, Heidi.

Spencer Pratt's wifey is reportedly writing a tell-all memoir, so perhaps she's been staying indoors .... working on this project. Question is, do we care what she has to say about her made-for-TV life?

For her sake, we hope someone does.

After making an appearance on the Late Show With David Letterman, Katie Holmes was clearly anxious to get out of town as she rushed daughter Suri to a waiting helicopter in NYC, on Thursday.

But while Katie was all smiles on her way to the heliport, Miss Cruise was definitely not in the mood to have her picture taken before boarding.

The 5-year-old showed off her playful side by making some funny faces, while being carried by mamma Holmes -- who knew little Suri could look so scary?

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Looking vibrant in a bright yellow dress and hot pink hair, Katy Perry made a colorful appearance on The Ellen DeGeneres Show, where she opened up on babies and announced plans for an upcoming FREE concert!

The "Firework" singer, who celebrated her 1-year anniversary with hubby Russell Brand last month, talked about starting a family:

"Yeah, I would love to have children. I think that's one of the reasons you get married. Especially to the person that you marry. You think, that person is going to be a good partner, a good parent. But, I'm not sure it's yet. We'll see, ya know ... If it doesn't hurt the first time, I'll keep popping them out."

Let's hope Russell's cool with that!

Perry went on to announce a surprise free concert in LA for fans:

"It is the 23rd of November. The day before Thanksgiving. I am giving thanks to all of my fans. This is my big announcement on 'Ellen' that no one has heard about or knows about. I played a 121 shows up in to the (Nov) 23rd date and I want to finish it off by renting out Staples (Center) myself and giving a free concert to anyone in the world that wants to come to the 'California Dreams' Tour as my last show."

Tune-in to The Ellen DeGeneres Show today to see Perry's full interview, and get a sneak peek at the world premiere of her new music video for the song "The One That Got Away."

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Kellan Lutz rocked sexy black specs while on the maroon carpet at Nylon magazine's "Guys" party. He's the mag's cover boy!

The Twilight hunk, wearing a killer striped sweater, joined a slew of celebrities at The Beverly in Los Angeles. ... like Jenny McCarthy. We're loving her oh-so-sexy Christian Louboutin boots!



Also at the party ... designers Dylan George, Abbot + Main and Luna Rosa Tequila.

After getting her daily workout on, Nicole Richie traded her sneakers for stilettos and headed straight to The Grove, where she promoted both Winter Kate and House of Harlow collections for Nordstrom.

The fashion designer stopped to chat with Extra! host Maria Menounos on her Fall 2011 clothing line, before having a meet and greet with fans. And get this -- Richie personally signed every item that was purchased, even posing for free photo ops!

Whether at the gym or hosting a big event, Nicole always manages to look très chic!

Demi Moore's usual youthful glow is fading!

Looks like the stress surrounding her alleged marriage drama with Ashton Kutcher is quickly aging the 48-year-old actress.

While leaving her favorite nail salon in LA, the Ghost actress sported a snug sweater, red Kabbalah string and her wedding ring. Seems as though Demi is still holding out hope that she and her younger hubby will weather the storm.

On Thursday, Ashton decided to quit Twitter after getting bashed for supporting Penn State's Joe Paterno. From now on ... instead of writing his own Tweets, the Two and a Half Men actor will have his management team monitor his account.

With Twitter out of the way, perhaps Ashton and Demi will have more time to focus on each other.