The new baby looks like he could be older sister Chicago's twin, as the bub looks a sweet picture of calm sleeping with his hands resting behind his head.
Fans also believe the Instagram post may have given away Psalm's middle name, with many Kardashian-Jenner fans suggesting that Kim and Kanye's newborn son has been dubbed Psalm 'Ye', a nod to the boy's father, who's also known as 'Yeezy'.
Kim Kardashian West and husband Kanye West share four children together, North, 5, Saint, 3, Chicago, 1, and Psalm 1-month-old.