David Arquette is back on the dating scene!

Courteney Cox's ex has called it quits with his girlfriend of five months, Christina McLarty.

Arquette, 40, Tweeted, "Sadly I'm single again. A long distance relationship proved to be too difficult."

The Scream 4 actor and the Entertainment Tonight reporter began dating in summer 2011.

Arquette separated from his wife Courteney Cox in 2010.

The two are the parents to 7-year-old daughter Coco.

Jersey Shore starlet Nicole "Snooki" Polizzi has finally confirmed that she and Jionni LaValle are engaged and expecting their first child together.

Snooki tells Us Weekly that she is 15 weeks pregnant and she learned the news "right after New Year's."

So what was her first thought? "'S***, I've been drinking!' I was worried," she tells the mag. "It was New Year's Eve and we were in Vegas, so I did go crazy."

"I have different priorities now," Snooki adds. "I don't care what anybody else thinks. As long as I know I'm ready and he's ready." LaValle chimed in, "We are not going to screw this up."

Wonder if Demi Moore is cool with this?

Rumer Willis and Demi's ex Ashton Kutcher hit the town in Hollywood Tuesday night for some late-night partying at The Sayers Club.

A clean-shaven Ashton, wearing black pants and his best Christmas sweater, left the club with some buddies. As for Rumer, the 23-year-old actress left holding on to the arm of a cute male friend.

With mom Demi Moore fresh out of treatment, is it appropriate for her ex to be partying with his stepdaughter? You be the judge.

Jessica Simpson is definitely comfortable in her pregnant skin! The 31-year-old songstress has posed completely nude for the April cover of Elle magazine.

The blonde Fashion Star mentor and her fiance Eric Johnson have also revealed that they're having a girl!

Simpson has already picked out the name for her little one. She tells the mag:

"We're sure. We're embroidering it on things. It's nothing shocking and nothing you'll have to add to the dictionary. When people hear it, they'll know why."

Jess says the hardest thing about being pregnant was giving up alcohol.

She adds, "Givin' up my Scotch? My Macallan 18? That was hard for me! Though now being pregnant, you crave other things. A big thing of water sounds great!"

Love her honesty!

Treating herself to the miniature sized ice cream cone while hanging out with friends in Westwood late Tuesday, Rihanna had a big smile on her face despite having spent most of her day saving away in rehearsal.

The "S&M" singer made an appearance on The Jonathan Ross Show in London, England, last weekend, where she revealed that she's completely over her single status.

"Single life is so overrated. It sucks. I have such incredible experiences in my life. You don't want to live your life and then meet someone. You want to share your life with someone. That's what I'm missing right now," she revealed.

While the "We Found Love" singer insists she's not looking for a man, she said she'd "love to date somebody cool, fun, funny." Enjoy it while you can Riri, guys are waiting in line to snap you up!

Sean Young is still feeling the effects of her late-night brawl outside the Academy Awards' Governors Ball at the Oscars. Yikes ... she's now sporting a neck brace!

The 52-year-old actress was arrested for reportedly slapping a security guard, but she claims it was his fault.

Following the incident, Young told X17online, "I was well-behaved. It was fine... and the surveillance tape will bear that out … It's atrocious behavior on the Academy's part."

Young says she's still waiting for an apology from the Academy. You know what they say, if the brace fits ...

After checking out of a 3-month rehab program in February, Brook Mueller has been working hard on her recovery via an outpatient program, and it definitely shows! The 34-year-old looked happy and healthy as she ventured out in Westwood to pick up frozen yogurt for her twins, Max and Bob, on Tuesday afternoon.

The former Mrs. Charlie Sheen showed off a much healthier frame in a black T-shirt -- which read "Hell is so hot right now" -- paired with a leather jacket and jeans, and still rocking her newly cropped 'do.

Mueller has been focused on spending all of her time with the twins since returning home, and she's gearing up to celebrate their third birthday with daddy Sheen, on March 14.

Keep up the good work, Brooke!

Michael Simon

Katherine McPhee knows how to look sexy in the city!

The stunning Smash star, who's hailing a taxi cab with style, is carrying a "You Can't Fake Fashion" canvas tote by eBay + CFDA. The bags, created by a number of famous fashion designers, were created to fight “counterfeit fashion."

One thing we do know, there's nothing counterfeit about Ms. McPhee. She's definitely the real deal!