The party had Stormi-themed balloons, food and games, as well as a wall of giant teddy bears and a cloud room with pictures of the baby on the walls.
Starting things off with a bang, the entrance to the party resembled Stormi's dad Travis Scott's Astroworld album art, featuring a giant blow-up replica of Stormi's face that welcomed guests into the venue.
Also, she said that he knew nothing about, did the guy Kylie or not. "Happy 1st birthday Stormi!".
Her sister is model Kendall jokingly answered the question Ellen about a possible pregnancy Kylie Jenner.
DJ Khaled was also in attendance at the event and gifted Stormi her very first tiny Chanel handbag!
The make-up mogul reportedly hired the entire backlot at Universal Studios in California for the bash, and the proud mum took to her Instagram Stories to share her daughter's huge shindig. Caitlyn captioned a photo with her daughter, granddaughter and girlfriend, Sophia Hutchins, at the party.
Do you agree with us that Kylie Jenner, at 21, has learned from the best (we're looking at you, Kris Jenner), when it comes to how to give a kid's birthday party?! I know you won't remember much about the first year of your life but I pray that you'll never forget to keep sharing your joy and laughter with the world.
Scott also took to Instagram to wish his little girl a happy birthday last week.