Actress Emily Blunt and her husband, former "The Office" star John Krasinski, have welcomed their first child, People.com reports. "Wanted to let the news out directly," Krasinski, 34, tweeted Sunday. "Emily and I are so incredibly happy to welcome our daughter Hazel into the world today! Happy bday!" Blunt, who turns 31 this Sunday, and Krasinski announced the pregnancy in September. The two were married in July 2010. Blunt co-stars with Tom Cruise in the science-fiction film "Edge of Tomorrow," due out in June, and will appear this Christmas in the screen adaptation of the Broadway musical "Into the Woods."