In Breath of the Wild, several outfits worn by previous incarnations of Link were available, but exclusively obtainable through amiibo. However, in Tears of the Kingdom, these armor sets have been included in the base game, and players wanting to give Link a classic Zelda look have only to thoroughly explore the map.
Source:https://www.cbr.com/zelda-previous-link-costumes-tears-of-the-kingdom-ranked/