Yesterday Jennifer Lopez and Marc Anthony's adorable twins Max and Emme were spotted going for a walk with their nanny in Los Angeles, and we can't get over how much the celebritots resemble their A-list parents!

After being rushed to the emergency room yesterday morning, actor Charlie Sheen has now checked into rehab.

His rep tells X17online, "Charlie Sheen has voluntarily entered an undisclosed rehabilitation center today. He is most grateful to all who have expressed their concern. Mr. Sheen asks that his privacy be respected at this time and that no additional informational will be provided."

Sheen was admitted to Cedars-Sinai Medical Center around 7am on Thursday after complaining of severe abdominal pain, and was released later in the evening.

Sheen's rep stated that he suffered a hernia, but various online reports speculated that the sit com star was admitted to the hospital after an alleged two day alcohol binge with several women at his Los Angeles home.

Though it was previously reported that Sheen would return to work next week, Two And A Half Men will go on hiatus until further notice. A rep for CBS has issued the following statement:

"Due to Charlie Sheen’s decision to enter a rehabilitation center, CBS, Warner Bros. Television and executive producer Chuck Lorre are placing “Two and a Half Men” on production hiatus. We are profoundly concerned for his health and well-being, and support his decision."

Demi Lovato is a free woman!

The Disney star has been in rehab since November, after getting into an altercation with one of her backup dancers at an airport. But after spending some quality time in the facility, Lovato is finally out and on her way back to LA, a source tells X17online.

The Camp Rock star reportedly wants to focus on getting back into her "regular routine" and spend time with her family and close friends. The source tells X17online exclusively:

"Demi came back to LA earlier this week, and she completed her prescribed treatment and an outpatient program near the treatment facility. For now, she is getting back to her regular routine and spending time with her family and close friends, and will continue to focus first and foremost on her well-being. To that end, she will continue to see doctors in LA who will help her work on the issues she confronted in treatment. She is so grateful to all of her fans for their unbelievable support, and looks forward to being able to talk to all of them very soon."

Lovato posted a message to fans on her Facebook page earlier this month thanking them for their "love, support and prayers" during her difficult time.

Congratulations on your release Demi! After spending almost three months in rehab, we have full confidence you've gained the tools you need to maintain your progress from here on out.

Check out Demi's full message to her fans, after the jump...

Newly engaged Australian model/actress Sophie Monk has admitted that she regrets getting plastic surgery, along with the image that goes along with it. "I’m so sick of people saying that just because of my lips, I’ve had surgery everywhere," she told Australia's Who magazine.

Monk says it all started when she had collagen injected into her lips following the botched removal of a cyst. "Half of my lip was removed with the cyst, and I was advised to get filler in my top lip to help balance it out. I should have said no to the filler in the first place but I trusted the doctor." No word on who the doctor was, but many speculate it was her ex-boyfriend, plastic surgeon Dr. John Diaz, whom she later broke up with when she caught him in bed with another woman.

Monk also revealed that she's struggled with her eating habits over the years. "The stress of this business tends to come out through my body. Either I eat too much or I eat nothing. I need to be more responsible for my body," she said.

So Monk seems to claim that the only thing she's had done is her mouth, but after looking at these before and after shots, is it possible there may have been a few other procedures as well?

Carrie Underwood's rep has shot down reports that the country star is expecting her first child with husband Mike Fisher.

"Carrie is not pregnant," her rep tells Us Weekly.

Underwood previously told the mag, "Everybody, like, is on this baby bandwagon, I don't know what the deal is. But I would really like to figure out what it's like to be married first, and I know he would too."

That was quick.

After 15-short months, Jamie Pressly's marriage to entertainment lawyer Simran Singh has officially ended.

The My Name is Earl star filed court documents in L.A. January 21, and the actress cites irreconcilable differences as the reason for separation. Pressly also lists the marriage ended December 27, which is just nine days before she was arrested on suspicion of a DUI.

The couple has no children together, but Pressly has a three-year-old son, Dezi, with former fiancé Eric Cubiche.

After telling the world last month that he had no idea "Who the f**k is Justin Bieber," Ozzy Osbourne is teaming up with 16-year-old Justin Bieber for a Best Buy Super Bowl commercial.

Here's Justin and Ozzy wearing their silver futuristic jumpsuits while on the set ... alongside Sharon. So THAT'S where Biebs got tips on how to wear eyeliner.

Drew Panayiotou, SVP of marketing for Best Buy, said the following about having the two represent the electronics chain:

"We're delighted to have Justin and Ozzy help us tell the Best Buy story. We know people have high expectations for these ads, and Justin and Ozzy add a whole new dimension of fun."

Can't wait to watch these two in action!

See another photo of Justin and Ozzy on set after the jump ...

Aww, this doesn't look like much of a joy ride!

Fresh from the Sundance Film Festival, Katie Holmes was spotted driving around Los Angeles today in her Mercedes, and she looked totally bummed about life. Sure, her miniseries The Kennedys isn't getting picked up and her latest film Son Of No One reportedly received bad reviews in Park City, but word on the street is that the movie is nearing a deal. Maybe things are looking up?