JWoww chops off her hair and debuts chic "mom do"

"New year, new hair!"

So Jenni "JWoww" Farley declares in the caption of her latest Instagram photo, showing off her new look. "I thought I never would be that mom who would cut off all my hair after having a baby but I did and I love it!" she continues. "This 'mom do' feels so amazing and I'm super happy!"

"Change is good, especially for the new year," the 29-year-old former "Jersey Shore" star adds. And she made plenty of changes this year, including marrying Roger Mathews in October and exclusively revealing to ET only days later that the couple is expecting their second child, a baby boy!

For now, she's celebrating being a mom to 1-year-old Meilani Alexandra with another Instagram of her nine most-liked posts of 2015 -- all of which feature her adorable daughter!