Yellowstone star Kevin Costner is celebrating his 70th birthday today -- and he's doing so by sharing an epic throwback snap of himself on social media.

Kevin Costner celebrated his 70th birthday on Saturday, Jan. 18, by sharing a throwback photograph of himself from his childhood on Instagram.

Kevin Costner has marked his birthday by sharing a throwback photo of himself with his former co-star Whitney Houston, admitting that he is “lucky”. Costner, who recently left his the now-completed Yellowstone amid a shroud of controversy, turned 70 on 18 January and celebrated the occasion by looking back at his own life and celebrating Houston’s.

Michael Caulfield/WireImage While turning 70, Kevin Costner is remembering the late Whitney Houston. Costner marked his 70th trip around the sun on Saturday, January 18, sharing a throwback photo via Instagram Story of himself and the late singer while on the set of 1992's Bodyguard.

Kevin Costner turns 70 on Saturday (Jan. 18), and his fans shared their mostly overjoyed reactions after the official Yellowstone account on Instagram wished him a happy birthday.

The Yellowstone star was a young boy in the resurfaced snapshot, which he posted on Instagram on Saturday, Jan. 18. The picture showed Costner flashing a big smile at the camera while dressed up as a cowboy, complete with a cowboy hat on his head and a holster on his hip.