Costumer
From ROdyssey Wiki

Most of us like to have our character pretty, having some costume to have some style with our brand new color !
This pretty little lady offers you to transform the hat of your choice into a costume for only 2 Millions Zeny !
You need to have the costume on you (Not equipped) and just ask her to gently take your money. Then Magic happens, you have a brand new costume to wear and brag to others who don’t !
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