Uncovering the hair, neck and arms
appropriately reference this fatwa to:
Question: Is it permissible for a woman to uncover her hair, neck and arms infront of her mahrams - such as her father and her brother?
Yes, it is permissible for a woman to have them - and that which is similar - uncovered in the presence of her mahrams.
And Allaah has the complete knowledge (of all affairs).
Shaykh Muhammed ibn 'Abdillaah as-Subayyal
Fataawa wa Rasaa.il Mukhtaarah - Pages 557-558