On Friday, Jenner was photographed rooting for her boyfriend's team while sitting curtsied at the 76ers' game against the Denver Nuggets at the Wells Fargo Center in Philadelphia.
DeGeneres wastes no time in quizzing the supermodel about whether or not Kylie Jenner and Travis Scott are actually expecting baby number two after she fuelled rumours this was the case on social media recently.
For more on Jenner and her beau, watch below.
To kick things off, all the guests entered via "Stormi's mouth" in an inflatable version of the toddler's face - I mean, extra.
The bash included rides, food, a cloud-filled play pen and even a shop for exclusive Stormi merch!
Kylie's parents, Kris Jenner and Caitlyn Jenner, and sisters Khloé and Kourtney were also in attendance.
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However a new study has found it to be a complete myth. " Beer before wine , you'll be fine; wine before beer, you'll feel queer". The participants within each groups were roughly matched with respect to age, body mass index and previous drinking habits.
Of course, no birthday party would be complete without a cake, and Stormi's was so extra, including a functioning carousel at the top of the many tiers, lovely flowers and butterflies, and a photo of Jenner and Stormi together.
Next, there was a live performance from Baby Shark, which even Travis seemed to enjoy.
'How the heck is stormi's 2nd birthday party going to top THAT.
On Jenner's birthday, Kylie shared adorable photos and video of her little girl on Instagram, along with a special message.
'I'm so jealous of stormi's party. As you can tell, we're not one bit jealous. First Chanel on her first birthday - excuse me while I go cry in the bathroom. "I don't think that that has happened".