Answered by Shaykh Faraz Rabbani
Is it important to cover oneself while taking a shower in a very small enclosed shower stall? If it is, does the fabric used necessarily have to pass the tests required for covering on the street … in other words, might the ‘vision’ of jinns and angels be of the sort that it could be deflected even by sheer covering?

Walaikum assalam,
It is recommended to cover one’s awrah while showering. The least would be one’s private parts. It is also recommended, and established from the practice of our beloved Prophet (Allah bless him and give him peace), to shower sitting. It is an adab with the Divine, though, and they say that if one does dhikr of Allah before entering the washroom, Allah shields one’s nakedness from unseen creatures.
[Note, this issue has been dealt with in more detail previously on this list. To look for old messages, go to: http://www.SunniPath.com, where you’ll find a search service]
Wassalam,