Musannaf Ibn Abi Shayba 16:559

Abu Bakr narrated to us, he said: Isa ibn Yunus narrated to us, from Ma'mar, who was informed by al-Zuhri, from Anas, who said: I saw upon Zaynab, the daughter of the Messenger of Allah, may Allah bless him and grant him peace, a shirt of silk [with] stripes.