The former "Jersey Shore" starlet showed off her lighter locks on her website, writing, "This soon to be mommy feels pretty again!"
In the sexy snapshot, the mom-to-be is taking a selfie, showing off her blonde hombre highlights. She's wearing a graphic t-shirt that shows off her cleavage, but there's no sign of her growing baby bump.
JWoww and her fiance Roger Mathews announced the pregnancy news on the reality star's website, writing, "We are so excited to share this new chapter of our lives with you as we become parents and create more memories with a new addition to our family! Thank you for all your love and support and for being there for us throughout the years! We are extremely happy and cannot wait for our bundle of joy to arrive!"
We have to say -- Jenni looks better than ever with a baby on board!
What do you think of her new 'do? Tell toofab in the comment section below, and click "Launch Gallery" to see other stars who have changed their hair color.