Fashion, wings and pet beads
These items use different equipment systems. Check the tooltip and duration before buying or using one.
Fashion and cloaks
Fashion occupies costume slots; a cloak uses its own slot. Some pieces have bonus stats or a set effect, so inspect the actual item rather than assuming every costume is purely cosmetic.
Blessing is a separate random-option system for supported fashion and cloak items. It is different from regular armor awakening.
Wings
Check whether the item is equipment or a temporary buff, and whether it expires. The Cupid Wings listed in beta rewards are an event item; a picture of wings does not establish an equipment type.
Pet beads
Beads provide effects through the supported pet-bead system. Their socket rules are separate from armor and weapon piercing.
Gear piercing is disabled here, so buying an old suit-piercing card will not let you socket your armor. Piercing rules.
Before buying
Confirm the usable slot, time limit, binding restrictions and actual bonus. The Auction House shows the listed item's state.