Sorry Taylor, Science Does Not Agree With Your Girl Squad

If you've got more than a handful of friends, it seems you may need to kick some to the kerb as science reckons our brains can't handle more than five besties at a time.

A study by the MIT Technology Review looked at a theory by British anthropologist Robin Dunbar, who noticed that there was a direct correlation between people's brains and how many friends they have - basically the bigger your brain the bigger your friendship group and the smaller your brain, the less friends you're bound to have.

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According to Dunbar, humans are only able to have 5 best friends, another 10 close friends, 35 acquaintances, and 100 additional contacts, due to the size of our neocortex.

And if you were having doubts about his theory, Dunbar actually tested out it out recently by examining 6 billion phone calls made by 35 million people in an anonymous European country.

"The team assumes that the frequency of calls between two individuals is a measure of the strength of their relationship," the MIT Technology Review states.

The study found that Dunbar's estimate wasn't too far fletched: "The average cumulative layer turns out to hold 4.1, 11.0, 29.8, and 128.9 users," researchers found—again, that's besties, close friends, acquaintances and "contacts" respectively.

So maybe Katy Perry and Rihanna had the right idea when they chose a girl squad of two as opposed to Tay Tay's massive army.

We know which one we'd choose.