This probably would have been worn with a white turtleneck underneath and either a pair of knee socks (yikes) or white booties.
I would leave the knee socks in the drawer and the go go boots in the closet but if I could find these Courreges sunglasses and the sexy little gloves cut to the wrist, it would be very tempting!
1970s Courreges Hyperbole mint green mini jumper. Size 4. $1400.