Kardashian and Chyna announced they were expecting a baby in May, shortly after the sock designer proposed marriage.
ENews confirmed that the baby was born at 9.18am PT, weighing 7 lbs, 5 oz, via C-section.
Kris Jenner was present for her granddaughter's arrival and told E!
Dream Renée Kardashian was born early Thursday morning - and she's already taking after her grandmother Kris Jenner! However, there are rumors that.
Amber Rose, Chyna's best friend, also shared the happy news on Instagram and congratulated the couple.
Before giving birth, Chyna even posted a #mannequinchallenge video on her Instagram account and captioned it "Dream team".
Rob Kardashian's sister, Khloe Kardashian, was ecstatic to share the news with the world.More news: Hate Crimes on the Rise as Protests Against Donald Trump Continue
"My new niece is absolutely stunning!" she tweeted.
"It was so lovely and I'm so excited and happy to have another grandchild!"
The "Rob & Chyna Baby Special" will bring viewers into the delivery room, and focus on the complicated journey the couple takes as they start their new family. However, they could not because it violated the hospital's protocol. The model already has a four-year-old son, King Cairo Stevenson, with her ex-fiancé Tyga, who is in a relationship with Rob's half-sister Kylie Jenner.
Nearly every member of the Kardashian family have been visiting the couple and their baby in the hospital.
Kardashian - who described his daughter as an "angel" sent from his late father Robert Kardashian - praised Chyna's strength as he posted a picture of the newborn baby.
"Rob and Chyna are so happy".
In fact, the name was trending in the United States within minutes of the news breaking.