On Dec. 4, Sarah Buxton tweeted, "There is a baby doing the robot inside my womb. I don't think it knows or cares that its due date was the 1st. It's just groovin' in there." Little did she know that he was doing his last womb dance, as hours later she gave birth to her and husband Tom Bukovac's first child, Marshall. The singer didn't make the announcement until Dec. 17. Earlier in the year, she shared that she's focusing more on songwriting instead of becoming a solo artist. Among the hits she penned is 'Stupid Boy' for Keith Urban.