To find your most "flattering" hairstyle your need one key piece of information: your ~face shape~. Tap to play or pause GIF Tap to play or pause GIF Tap to play or pause GIF Tap to play or pause GIF Joanna Borns / BuzzFeed There are seven basic human face shapes: square, rectangle, triangle, oval, diamond, circle, and heart. Joanna Borns / BuzzFeed How do you know what your face shape is? It's really very simple. Just look at one of these handy charts and find the dead-eyed lady that looks most like you. Alpha-c / Getty Images None of them look like you? Look closer. Alpha-c / Getty Images CLOSER. DOES THIS LOOK LIKE YOUR FACE? Thinkstock Try another chart. Do any of these look like you? Vmelinda / Getty Images Does this look like your face? Thinkstock No? Don't worry. Celebrities are great examples of the basic face shapes. Try to find one that matches your face. Reese Witherspoon Larry Busacca / Getty Images Lucy Liu Alberto E. Rodriguez / Getty Images Rihanna Jason Kempin / Gett Images Beyoncé Isaac Brekken / Getty Images Jennifer Anniston Brian Ach / Getty Images Angelina Jolie Alberto E. Rodriguez / Getty Images Kourtney Kardashian Jason Merritt / BuzzFeed If that doesn't work, find a geometry textbook. Flip through it until you find something that looks similar to your own face. amazon.com If that doesn't work: Get a protractor and measure each angle of your face until you come up with a shape. Remember, a rhombus is a quadrilateral with four sides that have the same length. Stockbyte / Getty Images If you still can't fit your human head into a face category, I guess just wear whatever hairstyle you want?