Baha'i women wore chadur (veil) in obedience to Abdul Baha

Florence gradually broke the news to her family that in Persia she would be wearing a chádur (the word means tent), an outer garment concealing the wearer from head to foot. Some chádurs were of black satin, others of black brilliantine (a dress fabric such as mohair or goat’s wool, glossy on both sides). The chádur was not so much a garment as a humiliation, a kind of degradation, and her wearing it horrified the American missionaries, but in obedience to ‘Abdu’l-Bahá she would wear it, as did the Bahá’í women of Persia.

(Arches of the Years by Marzieh Gail, Page 9)

https://bahai-library.com/pdf/g/gail_arches_years.pdf