Prismatic Gown
Wondrous Item,
Common
(cost 90 gp)
Crafting Components
Dress that has been worn and retailored at least 10 times
While it always remains perfectly fitted to the wearer, this ballroom gown constantly shifts between thousands of colors, styles, cuts and patterns. While wearing the prismatic gown, you gain advantage on saving throws made for the effects of spells from the prismatic school due to the odd magic woven into it.
Source