What are the regulations for a Muslim woman uncovering what is not considered 'awrah in front of Muslim women at parties and weddings, and is it permissible for a bride to wear a wedding dress that reveals the chest, shoulders, and back, and what are the characteristics and conditions for covering what is between the navel and the knee in front of Muslim women?

The bride should not wear clothing that reveals her chest and back in front of women, as a precaution. It may even be ruled forbidden if it is not certain that there are no immoral women who might photograph her or describe her to their husbands. The prohibition is confirmed if it is known that her mahrams will see her in such a state. The awrah of a woman in relation to another woman is from the navel to the knee. It is permissible for her to look at all parts of her body except between these two limbs, unless there is temptation or lust. As for the conditions of modest clothing that covers what is between the navel and the knee, there are no conditions other than it being covering, so that the skin is not visible through it.