Fans have been expressing their serious discomfort over Kourtney Kardashian's most recent picture with her new, and much younger, "best friend" Addison Rae.

Keep on reading to see why people are so uncomfortable...

Kourtney Kardashian is facing some serious heat from her fans...

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And it's all over a questionable Instagram post with her friend, Addison Rae.

Now, each of the Kardashian sisters has a massive influence on social media...

To say they’re Instagram-savvy is probably an understatement… So we aren’t too surprised whenever one of them comes under social media fire.

But they're more than just influencers...

They’re truly impressive entrepreneurs and businesswomen. Whatever you think about them, you can’t deny that they’ve done well for themselves.

But, as one of the most famous families of our generation, they are constantly scrutinized.

They can't even step out of their house for lunch without the flashing of cameras and the spiteful words of critics.

And, whether they like it or not, they have an impact on their young fans.

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Their influence is huge - you only have to look at the fact that so many girls went and got lip fillers after the whole Kylie Jenner thing.

And this often lands them in bad press.

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Let's be honest, when was the last time you saw a positive headline about a Kardashian?

But, refreshingly, one member of the Kardashian clan usually manages to hit the headlines for a positive reason.

The oldest sibling, Kourtney Kardashian, usually receives a lot of praise for her more realistic and relatable approach.

We aren't entirely surprised that Kourtney is the one to break the family's string of bad press.

The forty-one-year-old has remained as the least problematic, usually steering clear of the drama.

She's also a fan favorite.

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From her relatable resting-b**ch face to hilarious one-liners, Keeping Up With the Kardashians fans have hailed the star as a bit of an internet meme.

We can't forget this iconic moment.

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Ah, we remember it well.

She's been pretty candid about her personal issues in the past.

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Especially when it comes to her relationship with her ex, Scott Disick, who she's regularly opened up about on Keeping Up With The Kardashians.

Kourtney shares her little family with Scott.

The pair share 3 children together, Penelope, Reign, and Mason.

And even though the pair are separated...

They have done a truly wonderful job of raising their kids together with keeping public drama to the bare minimum.

It's clear that Kourtney has well and truly moved on...

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And alongside some brief romances with some much younger guys, it seems that the reality star has found herself a much younger friendship group too.

Kourtney's most recent BFF is TikToker Addison Rae.

Addison is only nineteen-years-old... making her twenty-two years younger than her new best friend.

They have only been friends for a few months...

But over the lockdown period, it has been reported that the pair have grown to be inseparable after Addison has been spending a lot of time at Kourtney's mansion.

They're clearly 2 peas in a pod...

But a recent bikini-clad photoshoot between the pair has left Kourtney's fans feeling a little bit uncomfortable.

The friends were posing in matching glittery bikinis...

And the photo has certainly left some fans with a sour taste in their mouths.

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Here is one of the posts that freaked people out.

They look pretty close, huh?

And here's another...

Do you feel that Kourtney's friendship with Addison is inappropriate and weird? Well, in the meantime, keep on scrolling to read about the time Kylie Jenner was roasted over leaving a small tip at a restaurant...