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.

Check out which other stars are expecting in Hollywood (and when they're due!) in the gallery above.

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