Vanessa Minnillo and Nick Lachey have announced that they've got another baby on the way -- and this time, it's a girl!

The couple, whose son Camden is 22 months old, made a sly announcement via Twitter, sending out a picture of a huge heart etched into a sandy beach, with the words "it's a girl" inside. Nick accompanied the photo with the caption, "Can't think of a better way to celebrate three years of marriage to my beautiful @VanessaLachey than this! #family."

 Vanessa blogged extensively about her experiences as a new mom, including her battle with post-partum depression, throughout 2013.