The 34-year-old shared a picture of herself as a baby next to one of her 20-month-old daughter.
She wrote: "My princess and I at the same age! North is seriously the sweetest, funniest girl I know!"
Kim then posted a snap of husband Kanye, 37, holding their daughter after her ballet class.
She wrote: "My cuties! #twinning #geminis"
Meanwhile Kim recently revealed that little Nori has 'taken' over their new Californian mansion.
Speaking to E! News, she said: "Oh, it's like she's taken over [the house] already. We have her playroom and she loves her room… she loves having her own space."
While it seems like North is pretty happy with her rooms in the house, Kim said she and Kanye aren't done with their renovations.
She continued: "We have to re-do my closet, the bathroom, the kitchen. So we're, like, doing section by section, but living there. It is so freeing, living in my own space."