The ruling on a woman wearing a short-sleeved garment in front of her mahrams (relatives one may not marry) and the limits of what she may expose to them

Question:
May Allah reward you. In her final question, she asks: What is the ruling on a woman wearing a short-sleeved garment in front of her mahrams, such as her father or her brother?

Answer:
It is not permissible for a woman to expose herself to her male mahrams except for what is customary to expose, provided there is no fitnah (trial, discord or temptation). She may expose her face, the hair of her head, her hands, and her feet, as long as it is customary to expose them and no fitnah arises from it. However, if she exposes something that causes fitnah, such as her legs, her arms, her chest, or her breasts, then this is not permissible, because it causes fitnah. Yes.