Keeping Up With the Kardashian-Jenner Kids: Who Belongs to Whom?

Mason Dash Disick is the first child of Kourtney Kardashian and ex-boyfriend Scott Disick. Kourtney opened up about choosing his name in a 2010 interview, saying that an aunt told her that "Mason means the same thing in English that Kardashian means in Armenian — stoneworker." And contrary to popular belief, his middle name doesn't come from the clothing stores that Kourtney and her sisters share. "That would be stupid," Kourtney said. "Dash is short for Kardashian, and it was my father's nickname."

Penelope Scotland Disick is the second child and only daughter of Kourtney Kardashian and Scott Disick. Her best friend is her cousin, North West. She loves Tinkerbell but is quizzical of mermaids.

North West is the first child of Kim Kardashian and husband Kanye West. She was present at her parents' Italian wedding in May 2014, and that same year she made her modeling debut on the cover of Vogue, followed by a feature in CR Fashion Book. She goes to Fashion Week, side-eyes the paparazzi, and wears clothes that cost more than your rent. She's basically a style icon, and according to her mom, she'd also be "a better president than Trump."

Reign Aston Disick is the third child and second son of Kourtney Kardashian and ex Scott Disick. Little Reign actually shares a birthday (Dec. 14) with his big brother, Mason!

Saint West is the second child and only son of Kim Kardashian and Kanye West. He suffered a health scare on New Year's Eve in 2017 after being rushed to the hospital and diagnosed with pneumonia. Luckily, the "resilient" toddler made it out OK.

Dream is the only child of Rob Kardashian and his ex-fiancée, Blac Chyna. With Rob being the only boy in the family, baby Dream is technically the sole heir to the Kardashian name. What a name for her to live up to, right?

The newest addition to the Kardashian-West family is baby Chicago, who was born via a gestational carrier. She is the third child and second daughter to Kim and Kanye. She made her debut in aunt Kylie Jenner's pregnancy video on Super Bowl Sunday.

Stormi Webster is the first child of Kylie Jenner and her boyfriend, rapper Travis Scott (née Jacques Webster). Stormi came into the world on Feb. 1 and was introduced via Instagram five days later. Her first photo, courtesy of mom Kylie, broke a social media record previously held by Beyoncé Knowles, Cristiano Ronaldo, and her own aunt, Kendall Jenner.

True is the first child of Khloé Kardashian and her former boyfriend, NBA player Tristan Thompson.