Sheikh `Abdul-Majeed Subh, a prominent Azharite scholar, states: “As for woman’s `Awrah (parts of the body that must be covered) in front of another woman, they are what is between navel and knees. Parts of the body other than this area may be exposed to another trustworthy woman.”
Given the above, it becomes clear that a woman may uncover her hair, face, hands, neck, shoulders, legs from below her knees as well as feet in front of another trustworthy woman.