Women wearing tall hats for the purpose of adornment
Question

                Is it permissible for a woman to wear a tall hat?
Praise be to Allah.
     If she wears it for the purpose of adornment among other 
    women or her mahram relatives, that is subject to the condition that it 
    should not resemble the dress of men or of kaafir women. But if she goes out 
    wearing it in front of non-mahram men, this is a kind of tabarruj (wanton 
    display), and Allaah says (interpretation of the meaning):

    “and do not 
    display yourselves like that of the times of ignorance”

    [al-Ahzaab 33:33]

    “Everything which involves 
    wanton display or makes a woman stand out among other women in a manner that 
    involves beautification is haraam and is not permissible for her.”