An MTV reality star just traded fist pumps for diaper changes as the shore welcomed its tiniest new cast member.

Sammi “Sweetheart” Giancola welcomed her son, Vincent Keith May, with fiancé Justin May on August 20. The Jersey Shore: Family Vacation star announced the news one year after sharing her miscarriage on the MTV show.

“Welcome to the world, my rainbow miracle baby,” she wrote alongside photos of herself and May with their newborn on Instagram Tuesday.

“After this very long journey to get here, words cannot describe how blessed and truly grateful we are. Forever living in our baby love bubble until further notice,” the MTV reality personality added.

The first photo showed baby Vincent in a hospital bassinet wearing a blue hat, matching pants, and a onesie that said, “Hi, I’m ne

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