"Extra's" Mario Lopez was at Trattoria Amici at Americana over the weekend, celebrating his daughter Gia's one-year birthday bash.

Lopez and girlfriend Courtney Mazza enjoyed the special event with friends and family at the Glendale, Calif. restaurant, where Gia was given an amazing castle cake from Pillsbury Sweet Moments.

Mario's adorable little girl has a featured role in Lopez's second book, "Mario & Baby Gia."