News Nick & Vanessa Lachey Reveal Sex of Unborn Baby By Krista Wick 6:27 PM PDT, June 20, 2012 Getty Images Back in March, a newly pregnant Vanessa Lachey tweeted that she had her sights set on a baby boy. Did she get her wish?VIDEO: Nick Lachey Got in 'Full Begging Position' to Propose to Vanessa MinnilloOn Wednesday, the 31-year-old Wipeout host revealed to her website that, yes, she will be expecting a son in the fall."It's a BOY," Vanessa divulged. "Nick and I are incredibly excited to share the news that we are expecting a baby boy. We can't wait to meet him soon!!!"VIDEO: Nick Lachey and Vanessa Minnillo's Secret WeddingNick announced the pregnancy earlier this year on Live! With Kelly during a co-hosting gig with Ripa.The newest addition to the Lachey family is expected to arrive this September.