Been needing to design this for some time now!
Here's Nege in her ceremonial outfit, consiting of a tabbard with the front and back connected with most likely anchor chains, two long "Miko like" sleeves, and some blue dyed cloth added to her circlet. And of course her usual outfit worn under it.
Her ceremonial outfit is made largely from surplus sails, and I guess she could wear it without her regular outfit under it..... its just she would be extremely embararessed. XD