Sarah Buxton is a mom! The singer-songwriter and her husband, musician Tom Bukovac, welcomed a son earlier this month.

"Tom and I are in love with our sweet baby boy, Marshall!," she tweeted Monday. "He came December 4th. My little Sagittarius."

This is the couple's first child. They were married on Nov. 20, 2010 in Nashville. Tom popped the question just before Christmas in 2009. "He totally surprised me!" Sarah told The Boot back when she was newly engaged. "He put it in an Advent calendar, where the candy goes, counting down to Christmas. I was so shocked when I found it, all I could do was just look at it and go, 'Oh my God! Oh my God!' And then I started crying."