Is it permissible for a woman to uncover her head, legs, and upper arms in front of her mahrams?

Question:
A letter... [was received from one of the female listeners, the substance of which is: What is the ruling on a woman uncovering her head, legs, and upper arms in front of her mahrams or in front of women? And what is permissible for a woman to uncover in front of those mentioned?.....].....

Answer:
......: and in front of women, but covering that is safer for the believing woman; because it may lead to fitnah (trial, discord or temptation), so it is better for her to cover her legs and cover her upper arms in front of her mahrams, and to cover her head in front of her mahrams, this is the best ...... covering it, and likewise the upper arm, covering it is better and safer so that it does not lead to fitnah (trial, discord or temptation).

The presenter: May Allah reward you with good.