Shaykh Muhamamd ibn Saalih al-‘Uthaymeen said:
With regard to her mahrams what she may uncover is the same as that which she may uncover in front of other women, so she may uncover her head, neck, feet, hands, forearms and calves, etc. But she should not make her clothes short.
Majmoo’ al-Fataawa, 12/276, 277
