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OTRC: Vanessa Minnillo and Nick Lachey share photo of massive baby bump

Vanessa and Nick Lachey appear in a photo posted on Minnillo's official Twitter account on July 25, 2012. (twitter.com/VanessaLachey)

Vanessa Minnillo and her husband Nick Lachey, who are expecting their first son in September, shared a photo of her massive baby bump with fans on Twitter.

In the photo, the host who also goes by Vanessa Lachey, is shown exposing her pregnant belly with Lachey, with the caption, "My Happiness... My Family! Ahhh, My Boys! (Wookie included)."

Nick Lachey, a 38-year-old former 98 Degrees singer, announced the pregnancy on the ABC show "LIVE! with Kelly," which he guest-hosted with Kelly Ripa on March 5.

Vanessa announced on June 21 that they were expecting a boy on her personal website.

"Nick and I are incredibly excited to share the news that we are expecting a baby boy," Vanessa wrote on her website. "We can't wait to meet him soon!"

Vanessa, 31, told fans in March that she was hoping to have a boy Tweeting, "#ToBeClear @NickSLachey & I are praying for a healthy baby First & Foremost! I just always envisioned a boy 1st to take care of his siblings."

Vanessa Lachey rose to fame as an MTV personality and co-hosted the ABC competition series "Wipeout" last year. She describes herself on her Twitter profile as a "Host by day, Wifey by night, Wanna-be Mommy all the time."

Nick Lachey told OnTheRedCarpet.com in mid-June 2011: "We want to have a family and we're very excited about that, so I wouldn't be surprised if it doesn't take too long. At least that's my hope. I'm getting up there. I gotta start pumping them out."

Vanessa Lachey had told OnTheRedCarpet.com around the same time, before their wedding, that the two wanted to "start having babies" after she filmed "Wipeout" in September 2011.

The two dated on and off for about three years before they announced their engagement in November 2010. They went public with their relationship soon after she appeared in his music video "What's Left of Me," which was released in 2006. The clip depicts Nick Lachey's marriage and divorce to Jessica Simpson, who is played by Vanessa Lachey.

Nick Lachey and Simpson were married between 2002 and 2006. The 31-year-old pop singer, who is also a cast member of the new NBC show "Fashion Star," recently welcomed daughter Maxwell Drew with fiance Eric Johnson.

She and Nick Lachey starred on the MTV reality show "Newlyweds: Nick and Jessica," which documented their married life together. His and his current wife's wedding was also televised, as part of a TLC network special.

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