Coco Arquette, Courteney Cox's daughter with David Arquette, is going to have a half baby sister! Her actor dad David Arcquette and girlfriend Christina Mclarty is expecting a baby.

After claiming on The Tonight Show with Jay Leno that he is more than 100 days sober, last April 2011, the 42-year old actor made a buzz just recently when he made drunken phone call to Howard Stern and was caught saying:

"She's with someone who loves and cares for her. That's all I care about," the actor stated during his phone call with Howard Stern's radio show last Wednesday. Apparently , though the "someone" he's pertaining to was not Courteney's co-star at her hit series "Cougar Town" Brian Van Holt, whom she is being linked to for over a year now.

"I'm wasted," Arquette then admitted on his phone call.

The "OMG! Insider" reporter and co-host is going to have her first baby with her on and off boyfriend, while this is going to be the second for the "Scream 4" actor. Christina Mclarty is said to be 4-months along her pregnancy.

Moreover, Arquette was reportedly very open about the pregnancy and even bragging about it during the filming of his latest movie, "Happy Face," a story about the serial killer Keith Hunter Jesperson, being shot in Vancouver.

On his appearance at Watch What Happens Live, David Arquette declared that Christina McLarty is the love of his life.

Weeks after that, rumors about them being engaged surfaced, but McLarty immediately cleared the rumors telling Us that, "We are totally happy and together in love, but we are not engaged," she said. "It's just a rumor that got out of control."

David Arquette was previously married to "Friends" star Courteney Cox in 1999, where they had a daughter Coco who is already nine years old. On October 2010, the then couple announced their separation and just last May 2013 their divorce was finalized. Arquette went into rehab for alcohol addiction on January 2011.