Rob Kardashian posts look-alike pic of newborn daughter Dream and late father Robert Kardashian: 'An exact copy'

The spitting image! Rob Kardashian didn't shy away from his emotions on Thursday, following the birth of his daughter, Dream.

The first-time dad was overjoyed to welcome the baby girl with fiancee, Blac Chyna, quickly taking to Instagram to share a precious first photo.

WATCH: Dream Kardashian Makes Her Snapchat Debut and She's Already Wearing a Flower Crown!

"Today was amazing," the 29-year-old reality star wrote. "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."

But the proud new dad also saw another very important resemblance in his newborn daughter. Rob posted a side-by-side photo of baby Dream and his late father, Robert Kardashian, writing, "She's an exact copy. Pops sent us an angel. It's truly a blessing. He's happier than anyone on this day. I'm so happy and thankful. GOODNIGHT."

Prior to welcoming his newest addition, Rob talked about the importance of having a child on his reality series Rob & Chyna. His father passed away from cancer in 2003 when Rob was just 16. Though he was vocal early on about wanting to have a boy, Rob wasn't disappointed to learn he'd be having a daughter.

WATCH: Rob Kardashian Shares Sweet New Photo of Baby Dream: 'I Am So Lucky!'

"It's an emotional moment. Me wanting to have a boy, it definitely stems from my dad but I'm sure I'll have the same relationship that I had with my father with my daughter," Rob said on the show. "I'm just happy that the baby's healthy."

For more on baby Dream's magical first day, watch the clip below!