The new parents both opted for long dark coats, white T-shirts and jeans, as they left their Brooklyn apartment on their way to Kanye's Yeezus concert.
In the past the reality TV star has admitted that her fiancé has helped her to adapt her style. "You want your guy to think you're really hot. I'll put something on and he'll [Kanye] say, "No, that doesn't look good", and I'll trust him."
Thirty-three-year-old Kim also revealed her style has changed since she and Kanye welcomed little North into the world.
"I want to dress a little lighter colourwise. I think Nori looks cute in light colours, and then I want to wear light colours. North doesn't typically wear pink, though. She wears mauve or blush, not, like, typical baby pink."