Question: In some lands the adornment of the women similar to the adornment of the men and they resemble. There is no difference between them except the women veil?
Answer: If you find something like this, and this is a reality, then the imitation [between women and men] is in other matters. That is in regards to the thawb: If such and such a color is specific to the men or specific to the women and the people of the land know it, then a man does not come to wear something known to be specific to the woman or is well known to be from the specific clothing of the woman. Likewise the opposite”
[Taken from: Sharh Sunan Abi Dawood no. 460]
Faisal ibn Abdul Qaadir ibn Hassan