"Mommy Kylie!!! You did it!!! I'm so incredibly proud of the woman you have grown up to be and I know that you are going to be the best mom to your new baby girl!" the mother of three writes. "Our girls are two weeks apart and I can’t wait for them to be besties!"
Continuing to gush over the 20-year-old new mom, Kim concludes, "I am so proud that you do what you want to do and live your life the way you want, you will pass down all of those amazing qualities to your baby girl. You were made to be a mom! I love you!"
"Congratulations My Sweet Kylie! What a magical ride it's been! I'll miss you bumping along with me," she captioned the image on Instagram. "Never in a million years did I think we would do this together but it's been that much more special because of it. God is so great!! He had His plan all along! I love you little mama 💕 love big mama."
Momager Kris Jenner was also thrilled to be welcoming another grandchild. "God is SO good!! I am so excited and thrilled to welcome another precious baby girl to our beautiful, ever growing family," she wrote on Instagram. "We are blessed beyond belief!"
Kylie kept a low profile while pregnant and only just got back on social media on Sunday to announce the birth of her and Travis Scott's child.