The SKIMS entrepreneur, 41, and her daughter North, eight, served matching black and grey outfits as they posed for a picture together.
Kim captioned the sweet post: "Best date ever" and fans couldn't get over how adorable mum and daughter looked side-by-side.
Lots of fans were also left in shock by how tall North is and took to the comments to reflect on how much time has passed since she was born.
One surprised follower wrote: “Wow she’s growing up fast.”
Another fan gushed: “How cute are you two.”
A third said: “Mommy daughter dates are the best.”
“I feel old," another follower declared.
While one Instagram user reflected: “Omg is Northie wearing heels. Where did the time go?”
A fan wrote: “North is growing up sooooo fast.”
Earlier this month, the world had its eyes on Kourtney Kardashian and Travis Barker as they tied the knot in a lavish wedding ceremony in Portofino, Italy.
The Kardashian-Jenners and Travis' family kept fans updated with footage from the wedding, however one clip filmed before the ceremony that caught the attention of the world saw an onlooker call North 'pretty'. Watch the footage below.
The adorable video made the rounds on TikTok and reminded everyone that although North is part of one of the most famous families in the world, she's still a child.
“She’s probably not used to getting the spotlight with her momma around,” one fan wrote under the TikTok video. “This is so sweet. She really is just an innocent child.”
“The most wholesome I have ever seen her,” one doting fan wrote beneath the video, which was posted by @amkardashian on the site.
This is so wholesome.