Kim Kardashian is gushing over her "sweetest baby ever" – two-year-old Psalm.

Kim's youngest child, whom she shares with Kanye West, turned two on Mother's Day on Sunday. "Such a special day to share together," the reality star wrote.

"He's my child that looks most Armenian to me like my grandpa and reminds me so much of my dad," she said, sharing a new photo of Psalm. "I can't even describe his smile and sweetness that everyone just feels when they are with him. Psalm- you have brought such calmness and evenness into all of our lives! All of your cousins and siblings love you so much! You really are the joy of our crew! Mommy loves you SOOOOOO much!!! [sic]" she added.