What is a placket in sewing.  A placket is an opening in a shirt, trousers, skirts or any other type of garment is allows the user to put the garment on.  The placket opens.  It usually has buttons to hold the placket down.  In a shirt it is down the front and at the end of the sleeve.  The illustration on the right shows a placket in a shirt sleeve. I have been known to [...]