"And tell the believing women to lower their gaze (from looking at forbidden things), and protect their private parts and not to show off their adornment except only that which is apparent and to draw their veils over their bosoms, and not to reveal their adornment except to their husbands, their fathers, their husband's fathers, their sons, their husband's sons, their brothers or their brother's sons, or their sister's sons, or their women, or the (female) slaves whom their right hands possess, or old male servants who lack vigour, or small children who have no sense of the shame of sex. And let them not stamp their feet so as to reveal what they hide of their adornment. And all of you beg Allah to forgive you all, O believers, that you may be successful. "
The Holy Qur'an. [Surah/Chapter: 24, Al-Noor / The Light. Verse 31]