Exposing one's Satr

Q: Please give the ruling regarding covering hair at home for women.

Q: Is the shape of the forearms and calves of a woman required to be concealed infront of non mahrams? 

Also, what about the upper half of the forearms and lower half of calves, as the shape might be exposed if the abaya sleeves fall down or the dress goes up due to wearing tight sleeves and leggings (to conceal skin)?

Q: Can a woman ride on the back of a motorcycle? The man drives and the woman rides on the back.

Q: We are baaligh women, and our ears are not pierced yet. Now we wish to have our ears pierced, but we cannot find a single lady to do it for us. In this situation, can we get our ears pierced by a male?

Q: Is my 2.5 year old toddler allowed to see my breast? 

I have a 3 week old baby and my milk supply is low. I have been advised by lactation specialist to let baby suckle as much as possible to increase my supply, minimum is 30 min every 2 hrs. But my toddler only sleeps 1 hour some days. I am alone during the day and nowhere to put my toddler every 2 hrs. 

So my question is, am I allowed to breastfeed my baby in front of my toddler?

Q: I wanted to ask a question regarding the dressing of women in their own homes. In my house we have our own gym area where me, my mother, and sisters exercise. While exercising they usually wear shorts that go till the knees and a low cut tank top that shows their cleavage. Their nipples are sometimes also visible sometimes. Is this allowed Islamically if there is no fear of fitnah?

Q: What is the awrah of a woman in front of male mahrams?

Q: Is it possible for a sister who is married to bath her brother because he underwent a surgery.

Q: Is it permissible as a male to wear shorts that are above the knees in your home, only with your wife and children?

Q: I would like to ask about going for a full body massages, is it permissible?