Baby boy Lachey is about to make his debut!

Proud parents Vanessa Minnillo and Nick Lachey shared their baby joy by posing for a Twitpic on Wednesday, which the Wipeout host posted on Twitter, with the caption: “My Happiness… My Family! Ahhh, My Boys!”

The happy couple are expecting their first child in September, and they already have a name picked out for the little guy, but Vanessa tells People mag, ”We’re going to tell him first, and then introduce him to the world after he knows his name.”

Lachey's ex-wife Jessica Simpson gave birth to daughter Maxwell in May.