Who you don't have to wear hijaab infront of.

With her bosoms covered well, and dress loose enough so as not to reveal her hidden adornment, she is to maintain this type of dress in public in front of all relations.

The only exceptions are:

(1) Husband

(2) Fathers (Includes Grandparents as well).

(3) The Fathers of their husbands.

(4) Their sons.

(5) The sons of their husbands.

(6) Their brothers.

(7) Their brother’s sons.

(8) Their sister’s sons`.

(9) Their women.

(10) Those whom their right hands posses.

(11) Those under their authority other than skillfull men.

(12) Small children who are not aware of women’s nakedness.

“And say to the Believing Women,to lower their gaze and guard their private parts. And they should not display their adornment save what is apparent therefrom. And they should place their covers over their bossoms. And they should not display their adornment except to their husbands or their fathers or the fathers of their husbands or their sons or the sons of their husbands or their brothers or their brother’s sons or sister’s sons` or their women or those whom their right hands posses or Those under their authority other than skillfull men or small children who are not aware of women’s nakedness. And they should not strike their feet so as to make known what they hide of their adornment. O Believers turn you all together to Allah so that you may be successful.”(24:31)