Kim releases first photo of Baby Saint West

Saint West is officially here, and adorable. Kim Kardashian shared the first public photo of her son Monday morning.

"Today is my dad's birthday," Kim wrote in the caption. I know there's nothing more in the world he would have wanted than to meet his grandchildren. So I wanted to share this pic of Saint with you all."

Kim welcomed Saint in December, with husband Kanye West. Baby Saint joins big sister North.

Kim Kardashian and Kanye West sit with their daughter North West during a rehearsal for the showing of Kanye West Adidas Fall 2015 collection on Thursday, Feb. 12, 2015

AP Photo/Bebeto Matthews