The "TMZ Sports" co-host tied the knot with his lovely girlfriend, Gracie, at Villa Cora in Florence on Monday ... and it looked like an absolute blast.

Mojo and Gracie's closest friends and family were in attendance for the festivities ... and as the newly wedded couple made their big entrance at the reception, Mojo made sure to show just how happy he is to be married -- dancing his face off and even getting in a few kicks.

Mojo wore an all-white tux for his big day ... and Gracie sported a gorgeous white dress.

The Muhtadis have been together for a few years now ... and got engaged back in February.