Krystal Keith shared the happy news with fans on Thursday (22Oct15), when she debuted a photo of her newborn on

She captioned the sweet snap, "Throwback Thursday to the most magical Monday of our lives! Meet our sweet girl Hensley Jack Sandubrae. So in love!"

Krystal wed the child's father Andrew Sandubrae in 2010.

Toby Keith, 54, also has two grandchildren from his eldest daughter Shelley.