The Alaskan Bush People star shared some photos on Instagram on Monday, March 10, to celebrate his son River's milestone 5th birthday ... and such a sweet boy! Happy Birthday kiddo!" ...

Such an intelligent beautiful boy. Wishing you a life full of magical moments." "You're Mama's Luv. Happy 5th Birthday baby ... Celebrates 18th Birthday with Rare Photos from Mom: 'Couldn ...

"I still have a lot to do, but if my whole life was one sentence, then Billy would be the exclamation mark at the end of it," John Stamos wrote of his little boy John Stamos and Caitlin McHugh ...