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Simon Cowell is expecting a baby with New York socialite Lauren Silverman, who is married to Cowell's close friend Andrew Silverman, reports Us Weekly. "She's around 10 weeks along," an insider tells the mag, adding that she plans to "leave her estranged husband to be with the father of her child."

X17online first broke the news of their relationship back in January of 2012 when our photographers snapped the two on Simon's yacht in St. Barth, looking like far more than just friends. A bikini-clad Lauren was by Simon's side the entire trip, so we knew something was up!

"Lauren and Andrew have been unhappy in their marriage for some time, and their divorce has been in the works for a while," the source added. "As their marriage deteriorated, she and Simon became close."

Click the gallery below to see how it all began!

A determined looking Julianne Hough looked all business on Tuesday as she left a gym after a good workout in West Hollywood.

The Rock of Ages star has been keeping things low key since her split with Ryan Seacrest earlier this year, but looks like this is the perfect time to focus more on her fitness!

He's on daddy duty!

Scott Disick decided to do away with the fancy cars and sharp threads for a day while hanging out with his main man Mason yesterday.

The father of two, who took his son toy shopping in Calabasas, usually leaves the parenting to Kourtney Kardashian but it's good to see him take the reigns!

On Tuesday, Amanda Seyfried looked angelic as she continued making her rounds to promote her upcoming film Lovelace, this time stopping by David Letterman in New York City.

The 27-year-old actress wore a cute Balmain outfit with a pair of Rupert Sanderson heels that complement her innocent yet sophisticated ensemble.

Her look sure is a stark contrast to her role in the film!

Former bad girl Evan Rachel Wood is a new mother! Trading her Marilyn Manson goth gear for some mom jeans, the 25-year-old actress and husband Jamie Bell welcomed a baby boy on Monday.

On Tuesday Evan posted a link to a clip from the 1987 film Raising Arizona, in which barren couple Nicolas Cage and Holly Hunter have just stolen a baby and Holly sobs, "I love him SOOOO much!," on her Twitter, along with the caption, "This pretty much sums up my feelings today. My heart is ready to burst!" Let's just hope Jamie and Evan didn't have to steal their new bundle of joy!

Meanwhile, the 27-year-old new dad took to his Twitter on Monday to praise his wife after giving birth naturally, saying: "Wow! What a day. Evan you are my warrior! You never cease to amaze. Thank you for birthing our son so naturally & peacefully. You did it!"

A spokesperson for the couple said in a statement to E! News, "Evan Rachel Wood and her husband Jamie Bell are parents to a beautiful boy. Parents and baby are doing well."

In one of her first tweets since giving birth, Evan gave a shout out to an unlikely hero -- Ricki Lake. On Tuesday, the Thirteen star wrote, "I have to say thank you @RickiLake for your inspiring documentary the business of being born I never knew I had a choice when it came to labor. It taught me so much & aided my decision in having a natural home birth which my son & I are now forever grateful for."

Ricki, who is a pro-natural home birth advocate, wrote back, "You are so welcome. Overjoyed to hear you had a positive birth experience & a beautiful son! :)#BOBB xo."

We wonder what the young couple will name their little guy? May we suggest -- Marilyn?

Despite reports earlier today that she would be voluntarily extending her stay in rehab by a 3-4 days, troubled star Lindsay Lohan has checked out of Cliffside rehab in Malibu and will hang out in LA until her guest-hosting gig on Chelsea Lately Monday, August 5, a spokesperson confirmed to X17online.

Hmm … so Lindsay is going on TV in what appears to be a matter of hours after getting out of 90 days in rehab and doing a show where regular host Chelsea Handler is a self-proclaimed lush? What?! Maybe Chelsea will leave a signed copy of Are you there, Vodka? It's Me, Chelsea as a welcome gift?!

Monday, TMZ reported that a source close to the starlet said the law-breaking actress was extending her stay in rehab - WRONG! Since when would Lindsay voluntarily do MORE days of rehabilitation than what a judge ordered?!

As guest host, The Canyons star will be stepping into Chelsea's shoes -- interacting with Chuy, running the roundtable and interviewing celebrity guests. Guess it's good that Lindsay won't be interacting with the vodka-imbibing party lady Chelsea, who is off for the week.

Hey Lilo -- here's a novel idea: Stay out of the public eye (for a while -- like a good, long while) and just try to stay sober. Let people forget about your drama and then come back in top form.

Viewers can check out (aka judge) the state of both Lindsay's ever-aging face and mental health on Monday, Aug. 5 at 11 pm E! We'll be watching!

Kristin Cavallari hit the gym in West Hollywood on Tuesday morning, and the former reality star wasn't wearing a stitch of makeup but she still looked amazing. And the fact that her body looks this good after giving birth almost exactly a year ago is quite an accomplishment as well!

And speaking of her figure, yesterday K. Cav re-tweeted one of her followers messages which read, "Respect to @KristinCav for saying she's actually trying to gain weight and not wanting to be so thin! #goodforyou #thingspeopleneedtohear," later adding, "So maybe people should stop judging. U don't know how much I eat or what I weigh so zip it!"

Apparently she got quite a few hateful tweets over those comments, because just a few moments later she wrote, "Off to dinner with my fav ladies @CharCharr @britfield1 @chelseabulte. Hope they don't feed me too much!!! Need to stay SKINNNNY."

We love how candid she is in interviews!

Katy Perry covers the September issue of Elle UK, and the songstress opens up about everything from the Rob Pattinson romance rumors to her relatonship with on-again boyfriend John Mayer.

The "Fireworks" singer made headlines when she was spotted attending a wedding with Twilight hunk and pal R-Patz, but she quickly assured his former flame Kristen Stewart that the hang out was purely platonic.

"I sent her a text message saying: 'I know you've seen all this stuff but you know I would never disrespect you. I'm not that person. I'm just trying to be a friend to him but it is unfortunate that I do have a set of t*ts.'"

As for her relationship with her Grammy-winning beau, the brunette beauty admits she was forced to look inside herself when he grew distant.

"He pulled away. That was a big hello for me. I realized I could lose the person I loved and I had to deal with some things, issues I think a lot of women have. You can be strong in one aspect of your life but submissive in another."

So what about those friendship fallout rumors with Rihanna?

"I love her and every time I see her, I'm reminded of the light that she has. There's a lot of dark in this business. I know a lot of people out there with the most detrimental entourages - they are the root of their demise. It's really unfortunate but you can't save these people. My days of celebrity saving are over!"

We can't believe she didn't dish the dirt on ex-husband Russell Brand during this sit-down!