Black Long Sleeve Mini Dress. Sustainable fashion is about looking good in eco-friendly clothing that makes us look and feel great. Enter this Black Long Sleeve Sienna Mini Dress from Nobody’s Child. This black number is made entirely from responsible viscose. A wonderful mini dress that can be dressed up or down depending on the time of day, At the front, lightly puffed sleeves are complemented by a touch of ruching. At the reverse, string ties loop into bows creating a bra-friendly open back. It helps both reveals and conceal. Switch between western boots and barely-there sandals.