Gym, tan . . . Lorenzo.

“Jersey Shore” star Nicole “Snooki” Polizzi gave birth yesterday to little Lorenzo Dominic LaValle, bringing the latest fist-pumping “Guido” to reality.

Snooks and fiancé Jionni LaValle welcomed their still-to-be-tanned 6-pound, 5-ounce bundle of joy into the world just before 3 a.m. at St. Barnabas Medical Center in Livingston, NJ, according to “Jersey Shore” network MTV.

“The world just got another Guido!!!” a Polizzi rep told MTV. “Nicole, Jionni & Enzo are doing great!”

MTV congratulated Polizzi and her fiancé and looked toward the newborn’s possible appearance on “Jersey Shore.”

“We look forward to Lorenzo’s first trip to the Jersey Shore and can’t wait to see his first animal-print onesie,” MTV said in a statement.

Snooki tweeted, “Being a mom is an amazing feeling!!! I love my little man to death! Jionni is such a cute dad.”MTV has said it is bringing “Jersey Shore” back for a sixth season, with the 24-year-old Snooki as part of the action, but has declined to offer specifics on how big a part Snooki will play in the show about hard-partying Italian-American friends.