Mii March, also known as Mii Profile Picture Month, is an annual celebration of Nintendo, StreetPass, and Mii characters during the month of March! Join in on the fun by changing your profile picture to an image of your Mii during March, and use the hashtag #MiiMarch to help spread the word!For more information about Mii March and other fun ideas about how you can participate, visit Mii March on Facebook Instagram , or Miiverse . You can also join the Mii March 2017 Facebook event to show that you're participating, and invite your friends to join in with you, too!