Country music scion Holly Williams is expecting her first child with husband Chris Coleman. Credit: Chris Coleman

Country music's royal baby! Country singer and scion Holly Williams tells Us Weekly she's expecting her first child with husband Chris Coleman.

Due this fall, Williamsthe granddaughter of the legendary Hank Williams Sr., and daughter of Hank Jr.shared a pic of her growing baby bump with Us on Wednesday, May 14. Looking beautiful in a white tank and faded denim shorts, Williams proudly cradles her baby bump as she beams for the camera.

"We are so ecstatic to have this little miracle coming!!!" Williams, 33, told Us. "The baby will become quite the road dogexperiencing all the amazing places we get to go as musicians on the road."

This is the first tot for the couple, who wed in September 2009, and the first grandchild for country rocker Hank Jr. (Holly is the child of Williams' ex-wife, Becky White.)

"Mom and Dad are unbelievably excited," the "Drinkin'" crooner said of her parents' reaction to the baby news. She added the two are "ready to spoil the little one!"