Another pinner identified these as banat Mazin but I think these are Ghawazee dancers photographed at either 1890 Paris world's fair or 1893 Columbian world expo. Dancers from Egypt, Syria, and Algeria were hired for both.
Theda Bara (born Theodosia Burr Goodman) (July 1885 – April was an American silent film actress. Bara was one of the most popular screen actresses of her era, and was one of cinema's earliest sex symbols. Read More: Theda Bara