Remember when we were all arguing about what colour that dress was? Things got out of hand, and we're still not sure what the answer actually was. However, we thought that was the end of that.
Well, it looks like Billie Eilish has gotten people talking again about colour, taking to Instagram to try and work out what colour her shoes are. It's not as straightforward as you'd assume.
It started calmly...
However, Billie wasn't happy with the answers people were giving her.
She's insistent that they're mint and white, but they look pretty pink to us...
Things then got very, very heated. Billie wasn't taking any prisoners.
READ MORE: Billie Eilish Says She's Planning To Tour 2017 EP 'Don't Smile At Me' And We're Hyped
What colours do you see? We hope that we get a definitive answer - but in the meantime, we'll continue to argue about what colours the shoes really are.