Nicole "Snooki" Polizzi has picked out a name for her unborn child. The 31-year-old "Jersey Shore" star shared a baby bump photo and her unborn son's name in an Instagram post Thursday. Polizzi showed off her belly in a mirror selfie with her 4-year-old daughter, Giovanna Marie. She included her baby boy's name as a hashtag in the caption. "BIG MAWMA #almosttime #ANGELO," the star wrote. Polizzi is parent to Giovanna and 6-year-old son Lorenzo Dominic with husband Jionni LaValle. She announced her third pregnancy on Thanksgiving in November. "What I'm thankful for this Thanksgiving #family," the star said on Instagram. Polizzi announced the next month she is pregnant with a baby boy. Polizzi shared a slideshow of photos of Giovanna and Lorenzo in honor of National Sibling Day on Wednesday. The pictures show the pair cuddling up for the camera. "Happy #nationalsiblingday to these nuggets. You drive mommy & daddy crazy!! We love you offspring!!" she wrote. Polizzi came to fame on the MTV series "Jersey Shore." She returned to star in "Jersey Shore: Family Vacation," which was renewed for a third season in December.