The former `Ugly Betty` actress and husband Noah Lebenzon became parents to baby Rafael yesterday morning (24.08.11), they revealed to Latina magazine.
The youngster weighed in at 7lb 7oz and measured 20 inches long.
The couple - who also have two-year-old daughter Paloma Louise - have not yet decided on a middle name for their son, but this will come as no surprise as they have previously admitted they were having problems agreeing on a moniker.
The 40-year-old actress said early in her pregnancy: "We know it`s a boy! We are trying to come up with some names that we can agree on.
"It has to be Spanish, but something non-speakers can pronounce without mauling. Suggestions? I`m open."
Last month, Ana celebrated her baby shower with friends and took to her twitter page afterwards to gush about the event.
She wrote: "Had a fab baby shower at The W Residences in Hollywood. Gorgeous!!! Thanks @HollywoodHotmom, u rule! (sic)"
As well as welcoming her son into the world, Ana is also celebrating a new career move after recently landing a role in drama series `Hung`.