Since you didn't include the picture i could be wrong but the most famous 'study of a woman's back' i know of is matisse.
To keep people out of the rain or heat or for all the different variety of colors <span />
Typically, though not entirely, Islamic art has focused on the depiction of patterns, whether purely geometric or floral, and Arabic calligraphy, rather than on figures, because it is feared by many Muslims that the depiction of the human form is idolatry and thereby a sin against God, forbidden in the Qur'an.
I hope this helps!!!
