A MIDDY is a type of blouse with a sailor collar. It is a traditional style of blouse that was popular in the early 20th century, and is still worn today by sailors and other seafarers. The term 'MIDDY' is derived from the word 'MIDSHIPMAN, ' which is a rank in the navy. The blouse typically has a high neckline, long sleeves, and a loose fit. It is often made of cotton or linen and is usually white or navy blue in color.