Nick Lachey and wife Vanessa Minnillo are celebrating their three years of marriage in a big way, with the announcement that they are expecting baby no. 2, and it’s a girl!

Lachey took to Twitter to share a picture of the couple’s son, Camden, running near a traced heart in the sand that read, “It’s a Girl!” “Can't think of a better way to celebrate 3 years of marriage to my beautiful @VanessaLachey than this! #family,” the singer wrote.

Lachey and Minnillo welcomed their first born, 22-month-old Camden John Lachey in September 2012. According to the New York Daily News, Minnillo was quite vocal with the struggles of being a first time parent during the first few months of motherhood. She kept an in depth blog post documenting her experiences, titled "Inside Story: My Experience with Baby Blues" that was published in March 2013.

The couple met back in 2006 when Minnillo starred in Lachey’s music video for “What’s left of Me” and started dating shortly after.

Photo Credit: Roger Wong/INFphoto.com
Image via Twitter from Nick Lachey