Arrival Date: Dec. 6, 2012 It's...a boy! His name is Magnus Hamilton Miller. Proud Papa: The Duets mentor's husband, entrepreneur Justin Miller. And baby makes...three. This is the first child for the couple, who got married in November 2011. Birth Announcement: The Sugarland singer shared the news on Dec. 7. "We are so thankful for all the prayers and support and are excited to take some time together as a new family," the couple says in a statement.