Sayyiduna Abdullah bin Umar (may Allah be pleased with him) heard the Messenger of Allah (peace and blessings be upon him) "forbidding women in their ihram from gloves, the niqab, and garments touched by wars and saffron." Apart from these, she may wear yellow-dyed or silk garments, jewellery, trousers, a shirt and leather socks (khuffs).
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحج / 9045