Has anyone ever attempted to purposely shrink clothing down a size or so, say a cotton with a synthetic blend like spandex/lycra by washing the garments in hot water and/or over drying in the clothes dryer? Can this be done successfully as a one time event?

For example, machine washables with normal care instructions that call for cold water and low tumble dry, can you shrink them down in size using some heat without necessarily destroying the integrity of the fabric itself if you abuse them like this just once?

I have some casual clothes that are too big, I am thinking of using a higher water temp and drying on a higher setting to shrink them a bit. Any experiences?