Formal Shirt

This character wears a dress shirt, also called tuxedo shirt or formal shirt.

A dress shirt is a garment with a collar and a full-length opening at the front, which is fastened using buttons or shirt studs mostly used in formal events, formal business, and some casual business where is expected or required its use, although it can be used as a casual garment (usually with a jacket or unbuttoned with a T-shirt).