Carefully prepare your brain for this puzzle, found by Hello Giggles on someone named Tiziana Vergari's Instagram. At first, you may quickly assume you've figured it all out, but don't jump to conclusions.

Same but different | My entry #whpidentity for @instagram [thank you #instagram for this featuring ❤️]

A post shared by tiziana vergari iPhoneography (@tizzia) on

Well, at least there's definitely no debate about the color of their dresses. Gold, right? Just kidding.

How many girls are in this photo?

Here's a case for each of those numbers: