The nice thing about pirate shirts is that they go with basically everything, including modern denim and medieval belt pouches. (I made the shirt including weaving the trim, jeans are commercial and belt pouch came from a re-enactor friend.)

A selfie of a white person taken in a long, narrow mirror. Their face is obscured by their phone. They are wearing a light green pirate shirt with rainbow trim on the neck slit. It is tucked into mid-blue denim jeans  and blouses at the belt line. There is a black leather kidney pouch at their belt. End ID.