Kourtney Kardashian fans shocked by photo of grown-up Penelope Disick

The popular reality star shared a new photo of her 10-year-old daughter Penelope, with many in disbelief over how grown up she looked.

Though fans have been keeping up with every facet of the Kardashians’ lives for decades, it’s still hard to believe that their kids are growing up.

Instagram users were left floored after Kourtney Kardashian, 43, shared a series of photos that showed her daughter, 10-year-old Penelope Disick, looking like a little lady.

In the shot, the pre-teen sported a bubblegum pink dress with a square neckline and spaghetti straps.

She wore her hair its natural colour (she’s been known to take walks on the red side every now and then) and had it styled down and straight to frame her smiling face.

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Penelope Disick, 10, looked so grown up in a new photo.

Next to Penelope was her younger brother, 7-year-old Reign Disick, who looked dapper in dark overalls and a graphic T-shirt. He, too, was flashing a big grin for the camera.

“P looks so grown,” one commenter remarked beneath the 10-slide carousel, which included various shots from Kardashian’s launch party for her new supplement line, Lemme.

“Omg don’t tell me that’s Penelope,” someone else exclaimed.

Kourtney Kardashian with her daughter, Penelope.

Kardashian shares Penelope, Reign and her oldest child — 12-year-old son Mason Disick — with ex-boyfriend Scott Disick, 39.

Though Disick did not appear to be in attendance for the festivities, Kardashian’s husband, Travis Barker, certainly was.

During the event, the reality star was photographed sucking on both her vitamin gummies and the Blink-182 drummer, 46.

Mrs Barker sported a figure-hugging dress with designs resembling water droplets, which she finished off with a sleek bob and smokey makeup. As for the rocker, he opted for a sequined baby blue button-down, dark pants and black sunglasses.

Kourtney also shared a loved up photo with her husband Travis Barker.

Amid the big celebration, Khloe Kardashian went viral with regard to Lemme — for all the wrong reasons.

On Thursday, the Good American founder, 38, called herself a “fatty” for splurging on two pieces of her sister’s vitamin gummies, and Twitter users were not happy.

This story originally appeared on New York Post and was reproduced with permission

Originally published as Kourtney Kardashian fans shocked by photo of grown-up Penelope Disick