We all have very different ideas about what we perceive as beautiful. Humans are incredibly diverse, and as such, we are wired to be attracted to people of a range of different shapes, sizes and colors.

And as much as we don’t want to live in a world where people are defined by their looks, the truth of the matter is us humans are very easily impressed by a stunning face.

And as much as we like to say that beauty is in the eye of the beholder, we all know there are definitely people who are considered “classically beautiful”: you know, the lucky few who are almost universally thought of as attractive.

Still, when getting into any kind of discussion on who we think the most beautiful woman on the planet is, it can get quite heated. And that’s precisely because we tend to have really divisive ideas about beauty. You might think someone is extraordinarily stunning, but then it turns out she isn’t as objectively beautiful as you thought.

However, a team of researchers led by Gary Linkov from the Temple University School of Medicine in Philadelphia believe that they have discovered the true secret to what we find beautiful – as a general rule of course.

And as unsexy as it sounds, it turns out that beauty is a lot more mathematical than we once thought.

In fact, this idea that there is a formula to objective beauty has itself been dubbed “mathematical beauty” and it refers to the notion that there are ideal facial dimensions and ratios, and if everything is in proportion, this will make for a supremely attractive face.

According to this mathematical theory, for a youthful, fresh-faced appearance it is vital that the middle section of the face is heart-shaped.