Mila Kunis, Ashton Kutcher expecting a baby

Mila Kunis and Ashton Kutcher are engaged and going to be parents. Kunis is pregnant with the couple's first child, a source confirms exclusively to E! News just weeks after being first to report that the former "That '70s Show" co-stars were planning to tie the knot.

IMAGE: Kutcher, Kunis Noel Vasquez / Getty Images Contributor
Ashton Kutcher and Mila Kunis are expecting a baby.

The "Ted" star was even recently spotted attending a prenatal yoga class in Hollywood.

Ironically, Kunis is the new face of Jim Beam bourbon --but of course she still makes for a stunning face. She just won't be sampling the brand's wares for a while.

PHOTOS: Red carpet baby bumps

She was photographed at the end of last month wearing a massive diamond ring while out shopping with her mom at the Grove shopping center in L.A., and a source confirmed to us that Kutcher had indeed popped the question.

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    Kevin Winter / Getty Images North America

    Image: Ashton Kutcher Appears on The Tonight Show with Jay Leno

    Ashton Kutcher

    The star of television ("That '70s Show") and film ("Jobs") has also been the leading man for some high-profile actresses in Hollywood.

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    Love all over again -

    Ashton Kutcher and actress Mila Kunis sit courtside at an NBA basketball game between the New Orleans Pelicans and Los Angeles Lakers in Los Angeles on March 4, 2014.

    The two stars, who found fame together on "That '70s Show" as Jackie and Kelso, started dating in the spring of 2011 and got engaged in February 2014.

    Gus Ruelas / AP
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    A teen hit -

    Kutcher speaks at the 2013 Teen Choice Awards 2013 at the Gibson Amphitheatre in Universal City, Calif., on Aug. 11, 2013.

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    Ring, ring -

    Kutcher, center, rings the New York Stock Exchange opening bell on Wall Street on Aug. 6, 2013.

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    His Jobs to do -

    Kutcher stars as Steve Jobs in the 2013 biopic about the Apple co-founder, "Jobs."

    Glen Wilson / AP
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    Golden time -

    Kutcher and model Elle Macpherson present an award during the 69th Annual Golden Globe Awards at the Beverly Hilton Hotel in Beverly Hills, Calif., on Jan. 15, 2012.

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    Fashionable Ashton -

    Kutcher arrives for the 2012 winter collection fashion show of Colcci during the Sao Paulo Fashion Week in Sao Paulo, Brazil, on Jan. 22, 2012.

    Yasuyoshi Chiba / AFP/Getty Images
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    Healthy offering -

    Natalie Portman stars as Emma Franklin and Kutcher is Adam Kurtzman in the 2011 romantic comedy "No Strings Attached," about a couple that tries to keep their relationship strictly physical.

    Paramount Pictures
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    New man in the middel -

    Kutcher joined the cast of "Two of a Half Men," alongside stars Jon Cryer, right, and Angus T. Jones, after the departure of Charlie Sheen, on Sept. 19, 2011.

    Matt Hoyle / CBS / Warner. Bros.
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    Actors and activists -

    Kutcher and then-wife actress Demi Moore attend a United Nations Office on Drugs and Crime news conference about the launch of the UN Trust Fund for Victims of Human Trafficking, at United Nations headquarters in New York on Nov. 4, 2010.

    Kutcher and Moore began dating in 2003 and married on Sept. 24, 2005. The couple split in 2011 and their divorce was finalized on Nov. 27, 2013.

    Andrew Gombert / EPA
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    Getting animated -

    Kutcher voiced a one-antlered deer named Elliot in the 2006 animated film "Open Season."

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    Chaos theory -

    Kutcher played the role of Evan in the 2004 psychological thriller "The Butterfly Effect."

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    Pillow talk -

    In the 2003 romantic comedy "Just Married," Kutcher and actress Brittany Murphy play newlyweds who keep having problems on their honeymoon.

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    Auto parts -

    Kutcher and Seann William Scott star in the 2000 comedy "Dude, Where's My Car?"

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    Decade of laughs -

    Kutcher, second from left in the back, starred in the coming-of-age comedy "That '70s Show" from 1998-2006 along with Wilmer Valderrama, Danny Masterson, Topher Grace, Laura Prepon, Don Stark, Tanya Roberts, Mila Kunis, Lisa Robin Kelly, Debra Jo Rupp, and Kurtwood Smith.

    Fox / Getty Images

"We have a thing called white T-shirt night and it's when you wear jeans and a white T-shirt and you go on a date," Kunis told Cosmopolitan recently, dishing on her and 36-year-old Kutcher's cozy date night preferences. "Nothing fancy, it's just something that you love to do. And whether that's bowling or dinner or going to a cheese shop and have some wine or walking around. I think that's just the best thing to do--and sometimes it's just nice to stay home."

PHOTOS: Mila &Ashton's romance rewind 

In spite of rumors that the couple is having twins, Kunis is expecting only one baby with Kutcher.

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