The Keeping Up With The Kardashians star, 33, wore a pair of tight grey jeans, cut off at the ankles, with a comfy-looking grey t'shirt and camel-coloured heels.
But it was the leather jacket that really made the outfit look less ordinary.
After Kim spent a day shopping with best friend LaLa Anthony in New York, she stayed in the same clothes to meet fiancé Kanye West in the evening.
Kim and Kanye, who got engaged earlier this year, were photographed with their baby daughter North West.
North's pram was covered with a blanket as her parents took her out of their enormous van and waved to waiting fans, all keen to get a glimpse of the famous family.
Earlier in the day, Kim had shared a rare snap of herself and LaLa with five-month-old North on her Instagram page.
In the cute picture, North's tiny podgy hands can be seen holding Kim and LaLa's perfectly-manicured fingers.
Kim captioned the photo: "Girls day @lala."
While pal LaLa - who's been spending time with Kim in New York while Kanye performs gigs as part of his Yeezus tour - replied: "Love u North!!"
Earlier this week, Kim denied rumours she'd resorted to surgery to lose her baby weight.
Do you like Kim's dressed-down look in grey jeans? Tell us below!