Sade Giyinen Hanımlar Cemiyeti
Sade Giyinen Hanımlar Cemiyeti was an Ottoman women's rights organization, founded in 1918. It focused on the liberation of women via dress reform, and played a part in the campaign against compulsory hijab (veiling) in Turkey.
Source: Wikipedia — Sade Giyinen Hanımlar Cemiyeti (CC BY-SA 4.0)