Kim Kardashian and Kanye «Ye» West's oldest child is celebrating her birthday! On Wednesday, North West turned 9, and her family was quick to take to social media to celebrate the milestone.Kim shared several photos to mark her oldest child's birthday, including mother-daughter snaps, throwback pics and glamorous shots.«Happy Birthday my baby, my bestie, my everything,» Kim captioned her post. «There’s no one like you! The most honest, creative, silly girl with the best heart.