Have you ever noticed this about Kylie Jenner's eyes?

'Brown eyed girls know.'

From the editors of LOOK

Kylie Jenner fans probably think they know every inch of Kylie Jenner’s body by now. But last night, the 18-year-old wanted to let everyone in on a secret.

The Keeping Up With The Kardashians star took to Instagram to pose for another one of her sultry selfies, but this time, she drew attention to her eyes.

‘Very proud of the tiny bit of green in my eyes. Brown eyed girls know…’, Kylie wrote to accompany the image.

She then followed up with similar selfie, writing the caption: ‘He knows.’ Oh, so cryptic!

To be fair, we’d never noticed that Kylie’s eyes were different colours until now, and her fans couldn’t help but compare themselves to the star.

‘I have green eyes but people say they look solid gold from a short distance’, one wrote. ‘Omg yes I feel this’, gushed another.

It’s not the first time Kylie’s drawn attention to her uniqueness – last year, the teenager gave a special shout out to the huge scar on her leg.

‘When I was about five my sister and I were playing hide and seek and I hid inside this really tall-enclosed gate’, Kylie told Celebuzz about how she got it. ‘After a while when my sister didn’t find me I had to climb up on this sharp pole sticking out from the gate.’

Ouch.