On Wednesdays, we wear pink: fans celebrate Mean Girls in style. To celebrate the anniversary — and its collision with Hump Day — mean girls (and boys) around the world have been posting pictures on social media, showing themselves decked out in pink.Click to see full answer. Simply so, what is on Wednesdays we wear pink from?This quote is kind of the call sign of Mean Girls fans everywhere and has been emblazoned on pink T-shirts that should be worn on Wednesdays. We won’t be like Regina George and judge if you wear yours during a Friday teen movie marathon though.Secondly, why do we wear pink on October 3rd? Mean Girls Day is a day dedicated to the celebration of all things fetch. On October 3rd, Mean Girls fans choose to wear pink in recognition of ‘the plastics’ rule that “on Wednesdays we wear pink.” Also, wHO said on Wednesday we wear pink? 8/8 So fetch The Plastics, made up of Regina George, Gretchen Wieners and Karen Smith have a whole rule book for what to wear and when. On Wednesday they wear pink. Cady borrowed a pink shirt from Damian Leigh for her first Wednesday lunch with the Plastics, and to this day we doubt she ever returned it.What do we wear on Wednesdays?On Wednesdays we wear pink. You can only wear jeans or track pants on Friday.