Kim Kardashian posted a thank you message to her ex-husband Kanye West on the commemorative day. The Kardashians star took to Instagram on Sunday to share a celebratory post for her former partner, the father of her four children: North, nine, Saint, six, Chicago, four, and three-year-old Psalm. Captioning a picture of the rapper with their kids, Kim, who is now dating comedian Pete Davidson, wrote. "Thank you for being the best dad to our babies and loving them the way you do! Happy Father's Day Ye."