The fast and prayers of a woman who does not wear the hijab
I do not wear the hijab. Will God accept my fast and prayers?
Hijab, the legal attire of a Muslim woman is a duty imposed by God Almighty. He commanded women to cover their entire bodies, except the face and hands, from men who are not their husbands or unmarriageable kin. The clothes of a female must not be revealing, transparent, nor cling to the body.
All legal duties must be observed
Despite this command, it is known that various legal duties that God has commanded the believers to perform are not interchangeable, meaning a Muslim woman who prays and fasts but does not wear the legal attire is blameless in regards to her fast and prayers, but blameworthy for not wearing the hijab, which is obligatory.
God is most Merciful
A Muslim must know that one of the many kinds of mercies that God extends to humanity is His decree that good deeds erase the bad and not vice-versa. A Muslim must also open a new page with God, repent from any sins, and make the month of Ramadan the starting point for embarking on good deeds that would lead him or her to God the Almighty and win His favor.
A Muslim woman, upon who God has bestowed the gift of prayers, fasting during Ramadan, and obedience to Him, should show gratitude by performing the duties she has neglected. This is because one of the signs that a good deed has been accepted is being conferred the success of following up that good deed with another.
And God Almighty knows best