Very comfortable dress circa 1960’s-70/s.  Leslie Fay Original on tag.  Top is a ribbed black short sleeve with a white long gown attached.  The gown has a silver trim and zips down from the top to the bottom revealing underneath a pair of separate black ribbed shorts to match the top.  You can adjust the zipper to the desire height so that the shorts underneath are fully revealed or completely concealed.  Very stylish.  Price $55 (minus the 20% discount, every item every day)..