"It's a boy for Donald Faison and Cacee Cobb! The couple welcomed a son on Thursday, Donald announced on Twitter. "Yesterday Cacee Cobb and I welcomed the most amazing little boy into our lives!" the 39-year-old "Kick-Ass 2" star Tweeted. "Oh Happy Day!!" Cacee, longtime best friend of fellow mom Jessica Simpson, re-Tweeted her husband's sentiments, adding, "The happiest day of my life." Donald's best bud and former "Scrubs" co-star Zach Braff also weighed in, jokingly Tweeting, "Thank you, Cacee Cobb. Donald Faison and I will take it from here," before adding the hashtag "mocha cub." The baby marks the first child for Cacee, 35. Donald, who she married in December 2012 (with a then-pregnant bestie Jessica Simpson serving as a bridesmaid), has four other children. The actor is also dad to Kobe, 11, Dade and Kaya, 13, and Sean, 16, from past relationships. Cacee announced she and Donald were expecting a child in February on Twitter, posting, "Looks like Donald Faison and I are going to have a little stormtrooper of our own," along with a link to a photo of a baby onesie featuring a tiny "Star Wars" stormtrooper. -- Erin O'Sullivan Copyright 2013 by NBC Universal, Inc. All rights reserved. This material may not be published, broadcast, rewritten or redistributed."