http://www.joystiq.com/2014/08/17/best-buy-amazon-offer-hyrule-warriors-pre-order-costumes/
http://www.gamestop.com/wii-u/games/hyrule-warriors/115561#bonusFeatures
Pre-Order from Gamestop to get Ocarina of Time costumes
Pre-Order from Aamazon to Twilight Princess costumes
Pre-Order from Best Buy to get Skyward Sword costumes