"This face says it all and melts my heart @robkardashian!!! Congratulations Rob and Chyna!! @blacchyna #love #family @dreamkardashian," Jenner, 61, wrote.
Seriously, that is one proud papa!
Rob and Blac Chyna welcomed Dream to the world on Thursday, and the Kardashian clan quickly took to social media to express their excitement.
"My new niece is absolutely stunning!!!" his older sister, Khloe Kardashian, tweeted. "So thankful I was able to land in time to witness this miracle happen! Praise God!"
The Rob and Chyna stars checked out of the hospital on Saturday, according to E!, and it wasn't long before the 29-year-old new dad was trying out Snapchat filters on his baby girl -- including the ever-popular puppy face.