This also means you can upgrade your armor from different fairies for the same effect. For every upgrade, you'll get another star. This will add a star to the armor - showing that it has been upgraded. In exchange for your heroic donation, each of the Great Fairies will offer to upgrade your Armor to bolster its effects and defense - however doing so will require several Materials that depend on the Armor chosen, and how upgraded the armor already is.

Once you've agreed to pay said one-time transaction (which can vary depending on the fairy), the Great Fairy will burst forth revealing a splendid fairy fountain. Note that the order you find the fairies in will dictate what price you need to pay - and how much you can upgrade your armor! The first fairy needs 100 Rupees, the second will ask for 500, the third will need 1,000, and the fourth Great Fairy will require a whopping 10,000 rupees!