And Saint seems to be taking a leaf out of dad Kanye West's book by not smiling for the camera.
But like mum Kim, 35, Saint seems to be a natural in front of the camera.
The reality TV star shared the pic to Instagram. She captioned it: "You're the sun in my morning babe."
The chubby little chap arrived in the world on December 5 and looks to be a good size for a 3 month old nipper.
Within 15 minutes the picture already had 329,000 Instagram likes.
But parenting isn't all sunshine and rainbows.