The actress and social-media star will be the boss of Milo Thomas Bugliari, born Wednesday morning. Milano and her agent hubby got their bundle of joy -- clocking in at 7 pounds and 19 inches long -- a little before 10 a.m., People said.
Milo is a first child for Milano and Bugliari, who married in 2009. During her pregnancy, the actress has been über-active on Twitter, tweeting her excitement, offering tips for cloth diapers and even answering fans' questions about motherhood.
The couple told E! News in May that the baby's name would be chosen from a list of five, after they finally met him.
Milano's résumé includes TV series "Who's the Boss?" with Tony Danza and the WB witch hit "Charmed," which costarred Shannen Doherty and later Rose McGowan.