We became accustomed to the idea that complementary anything was wrong and learned that colours that clashed were the way to go.
We got good at it even - and then Beyoncé had to go and do something mind-blowing.
Ready for it?
Queen Bey just posted a pic to her instagram account in which she MATCHED her manicure to her eyeshadow.
And just like that beauty rules chopped and changed all over again.
Beyoncé, the queen of, well, everything, not only matched her nails to her eyes she also wore a dusty pink blush on her beautifully-chiselled cheeks and a shiny lipstick in the exact same hue.
Damn it - she even matched her jacket (pink) with her makeup. And if that wasn't enough she sported incredible emerald jewels that teamed perfectly with her jacket cuffs and zipper too.
And you know what that means ... we will all be doing the same from this moment forward.
Scroll down for more Beyoncé beauty inspo.