Taking to Instagram, the mother-of-one shared her first snap of Scott to celebrate his birthday, before sharing candid holiday photos with little Stormi.
The family are on vacation at Turks and Caicos, an island in the Bahamas where Jenner also celebrated her 19th birthday.
The trip celebrated not only Scott's birthday but also three months since little Stormi's birth.
Earlier this week, Kylie gave her first interview since giving birth, revealing the reason behind her daughter's unique name.
“I really don’t know how we thought of Storm. Her dad [Travis Scott] insisted it was him, but I feel like it was me. And that kind of just stuck with us,” Kylie told the Evening Standard.
“And then I didn’t really like just Storm - I didn’t feel like that was her name. So then it became Stormi. And it just stuck. I feel like there were a lot of other names that I might have even liked better, to be honest, but I feel like Stormi picked her own name, like it was just her name.”