Fly plaid
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An added form of a pleated cloth in the same tartan as the kilt, cast over the left shoulder and fastened in front of the shoulder with a plaid brooch. It is commonly worn during the evening, particullarly for formal activities and other special events, such as weddings, dining, and other celebrations.
It can be a square piece of fringed tartan cloth any where from 36"X 36" up to 50"X 50". With the most common size being 40"X40". It is used as a more formal replacement for the small or "Drummers Plaid", which belts around the waist.