Rob, 29, took to Instagram to share a photo of his newborn baby girl, Dream Renee Kardashian, and post a heartfelt message to Blac Chyna.
"Today was amazing, I am so lucky!! Thank you @BlacChyna for having our baby and being so strong!
"I love you so much and can't wait to see her get older day by day with you Chy! I love you and Dream so much and appreciate both of you. I know everyone saying that's my twin but that's def your nose Chy lol," he wrote in caption.