"Happy birthday to this crazy, talented, beautiful woman," the 49-year-old country crooner wrote. "I am so lucky to be married to and be with her for the rest of my life. The best mother and role model that my 3 daughters could possibly have. She is extraordinary!!
Hill also received lots of birthday wishes from her fans and took to Instagram to express her gratitude. "Thank you to my fans for all of the wonderful birthday wishes," she captioned a scene photo. "This is one of my most favorite places I've ever traveled. (Add this to your must-see list.) Mile marker 17 on Hwy 1 in Pebble Beach, California. A spiritual place that has always made me cry like a baby. Just ask my children!"
McGraw also loves to brag about his oldest daughter, Gracie. The 19-year-old is taking after her parents and sings on her father's latest album. "She's way more talented than I am, anyway," McGraw gushed to ET. "She doesn't need any advice from me. She's so bubbly and she fills up a room when she walks in. She's got so much talent and is such a great songwriter, we're going to hear from her down the road, for sure."