The firemaker's skirt is obtained from the Balthazar Beauregard's Big Top BonanzaDistraction and Diversion. You can only acquire this item after the completion of The Firemaker's Curse. It is rewarded to players who earn around 615 points, though it has been obtained by those with under 350 points. Contrary to popular belief, it can be earned in any circus activities and not just the firemaking ones. If players lose this item, they can talk to Balthazar Beauregard to re-obtain it. Similar to all other circus outfits, this item does not give any bonuses.