Fern’s everyday apprentice mage look—XS–3XL with measurement fields. Not the winter-suit SKU. The Fern Cosplay Costume Apprentice Mage Outfit is the purple staff-and-robe silhouette most fans recognize first.
Sizes
XS through 3XL plus height/chest/waist/hips fields.
Staff and sleeves
Spellcasting poses need sleeve clearance—add measurements if your arms are long. Between letters, take the larger. Hand measurements can be off by 1–3 cm.
Apprentice tips
Halloween and Frieren meets suit this classic Fern. Soft flats. Order apprentice (not winter), size carefully, and keep the staff prop soft for convention rules.