The 'awrah (part of the body that must be covered) of a woman in front of women and its exposure at wedding parties

Question:
He says: What is your advice to the one who allows his wife, or his daughter, or his sister to go out with most of her body exposed to wedding parties, on the pretext that she is among women, and that a woman's 'awrah in front of a woman is from the navel to the knee?

Answer:
This is a lie. Her 'awrah is not from the navel to the knee; her 'awrah is her entire body except for her face and her hands, and whatever is needed to be exposed for necessity. What is for necessity is her hands, her face, and her feet. Her 'awrah in front of women is like her 'awrah in front of her mahram (a relative one may not marry) men, because Allah mentioned women and mahram men in one verse: except for their husbands, their fathers, their fathers'… up to His saying: or their women. So women are like mahram men. By Allah, do you send a woman to her father or her brother with nothing covering her except between the navel and the knee?
Does anyone do this? No one does this. This is a clear evil. Likewise, she does not go out in front of women except with what she goes out in to her father, her brother, and her mahram. Yes.