JUST IN: Hillary Duff Gives Birth To Baby Boy! His Name Is Luca!

Hillary Duff is now a mom!

She tweeted Thursday afternoon, “Welcome to the World Luca Cruz Comrie! Tuesday evening, we became proud parents of a healthy 7 pound 6 ounce beautiful boy.”

Hillary, 24, who married hockey player husband Mike Comrie in August 2010, added: “We are overjoyed and feel like the luckiest parents in the world…..He is surrounded by so much love!! Mom and baby are both doing extremely well.”