Kylie's sister Kendall Jenner then shared a brief but sweet tribute on her Instagram Story. Alongside a photo of the 818 founder holding Kylie as a baby, Kendall wrote: "happy birthday my tiny ...

The 29-year-old model-turned-entrepreneur shared a collection of photos ... sister Kylie Jenner's son. In the picture, the tot chugged on a sippy bottle while cuddled in Kendall's lap as she ...