Blouse
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A blouse is a loose-fitting upper garment, mainly worn by workmen, peasants, artists, women, and children. It is typically gathered at the waist or hips so that it hangs loosely over the wearer's body
A modern striped bow tie neck blouse and a navy blue mini skirt
A camisole being used as a blouse
A man and woman wearing poet shirts—a unisex blouse, inspired by Romanticism and worn by fashionable people such as the English poet, Lord Byron
The Seinfeld "puffy shirt", worn by Jerry Seinfeld, is an example of a poet shirt blouse.
Pleat
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A pleat is a type of fold formed by doubling fabric back upon itself and securing it in place. It is commonly used in clothing and upholstery to narrow a wide piece of fabric through gathering.
Catholic clergymen wearing pleated rochets
The knife pleat is the basic pleat used in sewing.
Knife pleats with the construction and seam stitches shown.
Box pleats for a skirt.