BORN TO BE A COWBOY, KEVIN COSTNER CELEBRATED HIS 70TH BIRTHDAY! 
He showed his childhood photo, penning, “If you can believe it, this is me. I was chasing the cowboy life just about as soon as I could walk, and here I am doing it still.”
“Thank you guys for the birthday wishes,” the “Yellowstone” and “Horizon: An American Saga” star added.