Before Keeping Up with the Kardashians became a global television hit - Kourtney Kardashian was just a girl from Calabasas.

The mom-of-three took to Instagram with a throwback photo of herself as a 15-year-old.

Kourtney was seen in a pink bikini, from a 1994 family trip to Cabo San Lucas, Mexico.

The 41-year-old was photographed grabbing her towel, as little sister Khloé could be seen nearby blowing up a beach ball.

It happened to be the year that the Kardashian name first came to public attention.

Their mother's best friend Nicole Brown Simpson was killed that June.

Kourtney's late father Robert Kardashian subsequently defended her ex-husband OJ Simpson in the now infamous trial.

The family later capitalized on their name when their E! reality series premiered in 2007, which recently wrapped on its 20th and final season.

Kourtney previously took a step back from the show last year, telling Vogue Arabia: "I have been filming the show non-stop for 14 years. I was feeling unfulfilled and it became a toxic environment for me to continue to have it occupy as much of my life as it was."

After Kourtney shared the snap on Instagram, some fans couldn't help but notice how different she looks today.

"Holy smokes! She looks like a brand new person now. Blatant plastic surgery everywhere. Sad," one fan wrote.

"Looks like she's had plenty of surgery too," a second added.

"LOOK AT HER FACE THEN AND LOOK AT IT NOW....LMAO! SHE'S HAD A TON OF WORK DONE!" a third chimed in.

Related: 10 Times 'Keeping Up With The Kardashians' Made Us All Cry

However some agreed that although she may have had some work done, the amount was "subtle."

"I agree she looks different, but she also is the kardashian sister who looks closest to her pre-surgery days," one fan said.

"She definitely has had quite a lot of work done but its way more subtle than all her relatives," another co-signed.

Meanwhile, Kourtney's love life seems to be heating up after rumors she's dating musician Travis Barker.

The Poosh founder is said to have “grown close” to the Blink 182 drummer.

Related: Kim Kardashian Accused Of ‘Cutting’ Kanye Out Of Her Life After North Comparison

Kourt shared a photo with her 108 million Instagram followers looking sexy while wearing just a black bra and pants in a mirror selfie.

She captioned the picture: “sweet dreams”

Travis, 45, couldn’t resist leaving a message under the sizzling image, posting an emoji of a rose.

The reality star has been friends with the musician for years, but insiders say they’re now "closer than ever."

Next: Kourtney Kardashian Snubs Scott Disick After Rumors She’s Dating Travis Barker