Opinion Of Some Companions, Taba’In And Early Jurists On Hijab (Surah An-Nur)
As far as the chest is concerned, it must be well covered to act upon the directive to guard your private parts. There are two different directives, one is for covering the private parts and the other for covering the adornment. The Private parts have to be covered all the time, while the adornments that must be covered, but the old women are relaxed in this. They are allowed not to cover it.