The 20-year-old new mom and the 22-year-old model spent their day off together and wore the exact same outfit. In an Instagram pic shared by Kylie on Wednesday, the sisters are wearing black robes with matching tank tops and slippers. Kendall is on the hood of an SUV while Kylie looks up at her.
"It’s not that it’s more exciting than any other births in the family -- it’s different exciting, because she’s my baby sister who I grew up with," she explained. "We all grew up in twos: Kourtney and Kim grew up together; Rob and Khloe; Brandon and Brody; Burton and Casey, and then Kylie and I. So to see my best friend growing up, have a baby, it’s already made us even closer."