Vintage 1970s Bright Psychedelic Sparkle and Black Velvet Maxi Dress Size S/M

70s sleeveless maxi dress with a black velvet bodice and a sparkle rainbow swirl medallion print skirt. There are 2 long slits on each side. It zips up the center back.  Brand - Unknown, no labels Size - approximately a modern S/M - please check measurements to ensure fit Shoulders - 13.5" across Chest - 18.5" pit to pit High Waist - approximately 14.25" across Hips - approximately 21.75" across Length - 55.5", 14.25" bodice Condition - I don't see any holes or stains