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

Kevin Costner shared an emotional message about his late Bodyguard costar Whitney Houston while reflecting on his 70th 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.

Kevin Costner honored his friendship with the late and great Whitney Houston on his 70th birthday over the weekend.

Kevin Costner shared a throwback photo of his childhood self dressed in a cowboy outfit to celebrate his birthday. The "Horizon" star turned 70 Jan. 18.