Fashion may be equipped by going through the World Tree screen, then selecting a gumball and pressing the "Fashion" button.
Most fashion equips will have a slight additional effect, such as +1 Attack or +1 Power. See the Fashion category for a list of all Gumballs with equippable fashions, effects and where to get them, or select the gumball below.
In addition to base stats a gumball with at least one fashion owned will also increase its contribution to Energy in Sky by 250.
Aoluwei's Blade Fashion outfits
Canas' Enlightenment Fashion outfits
Ranger's Song Fashion outfits
Abyss' Roar Fashion outfits