Something you wear starting with the letter I is izar. An izar is a long garment worn over other clothing by Muslim women.
Frock
Frock. Am I answering someone's crossword?
Here is a list of something you wear starting with n:necklacenecktieCheers! :)
watchSomething you wear starting with W is a weskit.
flair jeans
Kilt
genes
coat
vest
Underwear
beanie
Waistcoat
dresses