Safeman's Sunny Day

This is one of the Re-Logic team's personal outfits, made for Safeman, their community manager, and like the rest of the developer wardrobe it rides inside Treasure Bags. That gates it twice over. Bags do not exist in a Classic world at all, so you need Expert or Master, and only Hardmode bosses can carry it, with Queen Slime the odd one out that never does. It will not fall out of the first bag you open, so plan on refighting whatever boss you find easiest.

The clothing is not the whole package. Safeman's Blanket Cape drops alongside the dress and the rest, and it is counted as an accessory rather than another costume piece, so the bag that finally pays out hands you two different kinds of item at once.

Sunny Day is a ring of sunlight worn on the head, and it does something with Forbidden armor that no other headpiece does. The floating marker that set bonus normally puts near you starts tracking the sun instead, which drops it neatly inside the ring. Purely decorative, and the one pairing worth building an outfit around.