Vanessa Minnillo is prime to pop!

The pregnant star and husband Nick Lachey posted a photo of Vanessa's growing belly on Twitter last night -- the 98 Degrees singer touching her giant, bare stomach.

"My Happiness... My Family! Ahhh, My Boys!" Minnillo tweeted along with the photo, confirming that she is having a mini-Nick.

While Vanessa looks like she's ready to give birth, her due date actually isn't until September.

From TooFab.com

Thumbnail via TooFab.com