It's hard to tell why, exactly, Kourtney looks so much like the 20-year-old model, but the lens flare and bright lighting -- which made it look like the 39-year-old reality star was rocking blonde locks -- might have played a big role.
The comparison is undoubtedly a little awkward, considering she and Scott dated for 10 years and share three kids -- 8-year-old son Mason, 6-year-old daughter Penelope and 3-year-old son Reign.
While it's unclear when exactly the photo was snapped, it's clear that the remarkable similarity was a fluke, and not likely something Kourtney was shooting for.
In an Instagram post she shared on Saturday -- showing her sitting poolside while surfing the internet on her laptop and "Christmas shopping," according to her caption -- she's sporting her signature brunette ponytail, while flaunting her impressive bikini bod at the same time.
"They all sat at a table in front and Kourtney and Sofia were talking and laughing a lot. Everyone was talking and having a good time,” @SarahMooreOnline, also known as Sarah Moore, told ET at the time, adding that Disick and Richie kept the PDA to a minimum. "Scott wasn't showing any affection to Sofia at the table -- no hand holding or arm around her or anything."
For more on Scott and Sofia's on-and-off relationship, check out the video below.