Hadith.1082 - Yunus ibn Ya'qub asked Imam Jafar ibn Muhammad Al-Sadiq (as) about a man who prays in one garment.
Imam (as) said: "Yes."
He then asked: "What about a woman?"
Imam (as) said: "No, and it is not proper for a free woman (Hurr) to pray when she menstruates except with a khimar (headscarf), unless She does not find it."