Wait, isn’t everybody’s head essentially acircle?

Apparently that’s just one of the many possible shapes a human head can be!

Yep, it can even be rectangular or triangular.

Reese Witherspoon

Since these shapes are generally nuanced, what shape you have can be difficult to understand.

But, thankfully there’s a trick.

You might even go one further and trace the outline of your face onto a mirror.

Jourdan Dunn

Justpleasemake sure to use something washable, like lipstick.

Now you might pick a hairstyle that’s essentially guaranteed to fit you perfectly.

Here are some options.

Penelope Cruz

If your hair is fine or thin, you may also want to experiment with long layers.

If you don’t normally part your hair down the middle, you should also give that a go.

Miladyrecommends a braiding style that will “frame the cheekbones.”

Victoria Beckham

Of course, this guideline doesn’t just have to apply to braided looks.

It’s pretty incredible.

And it’s not just bangs that pose a challenge for those with heart-shaped faces.

Reese Witherspoon

But don’t worry, there are plenty of other styles you’ve got the option to rock.

According to the site, both inverted triangular and heart-shaped faces are longer than they are wide.

Both shapes also feature a tapering jawline.

Tyra Banks

Still, the guidelines for both shapes are mostly interchangeable.

Instead, you’ll want to rely on lobs with long layers.

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Unsure whether you have a diamond-shaped face?

Garcelle Beauvais Nilon

It’s actually simpler to figure out than it seems.

Schult also recommended long layers and elongated side-sweeping bangs.

“Preferably styled in light beachy waves,” she added.

Olivia Wilde

As it turns out, though, that’s not necessarily the case.

They are two separate shapes, after all.

The expert also shared her secrets on how to best highlight a rectangular face.

Liv Tyler

Shoulder- to mid-length hair can actually work best for rectangular faces.

Unlike an oval, an oblong-shaped face will be longer across the board and not as wide.

A narrow chin would not be uncommon.

Kate Beckinsale

Although narrower overall, an oblong face shape still entails a wider forehead compared to an oval face.

Think:Kate Beckinsale.

A diagonal part looks especially fantastic on oblong faces.