Sand-y / beige-y sleeveless dress by french designer jean colonna. Made from cotton jersey fabric, dress has lowish round neck and large, asymmetrical rectangular section added to one side of the dress. This section can be worn loose / flapping, or wrapped around the body via a belt made from long, long strip of herringbone tape to create a more straight/narrow shape. Can be tied, arranged in various ways.

There is a brown version of the same dress here.

Size 40 (womens)
Check measurements to confirm fit
All measurements taken flat

Shoulder width: 29.5 cm
Width (at underarms): 37.5 cm
Waist width: 56 cm
Length (neck to hem): 105 cm
Hem width: 116 cm

100% cotton
Made in italy
1990s (1997 or later)

See more jean colonna items here, or read more about the designer here.