Clothing and Covering the Aurah

Q: Can a person read Salaah with a Topee only and no Kurta?

Q: My question is regarding namaz. Can one offer namaz without something on his head? I mean topee, cap or hat etc? When we are late for namaz, we rush and join the jamaat ignoring the cap etc. Further, if we are offering namaz at home, can we perform namaz without a cap?

Q: Can women offer salaah in kameez shalwar with hijab or is it mandatory to put on an abaya till the feet? When I say kameez shalwar, I mean the one which is loose and not body revealing.

Q:

1. Is it necessary for a lady to have her hair covered while sleeping, cooking and when in bed making zikr?

2. Can a lady read salaat with jeans?

Q: Is a woman allowed to perform salaah with her niqaab covering her face in the presence of non-mahram men?

Q:

1. I now wear 2 khimars, 2 shalwars, 1 half-sleeve T-shirt underneath two kurtas, and a pair of gloves (and I try my best to tuck in the sleeves of the 2 kurtas into them) until the wrists because my clothes are thin and quite see-through. After wearing these clothes, I feel comfortable, Alhamdulillah, that the satr is not going to be seen.

My question now is that if a woman goes into sajdah and if she is wearing a see-through kurta (and no other shirt) and even though her khimar (which reaches almost until her knee cap when she is standing) still covers her body during sajdah by draping around it but does not cover the kurta itself such that if someone (like an angel or a jinn) were to watch her from below the ground, they would see the kurta uncovered by the khimar but someone standing on the ground could not see anything underneath the khimar at all. Does this invalidate the prayer?

2. If two limbs are exposed during Salaah, each less than a quarter of its whole area, how can a woman know if it invalidated her prayer? What is the length she can measure to?

3. If a woman wears shalwar (which kind of shows her figure but is not figure-hugging like tights), then is her Namaz valid?

Q: Will a woman be allowed to wear a long dress or long skirt to read salaah?

Q: Can I pray in leggings if my top ends a few inches above my ankles?

Q: Is not covering the feet below the ankles for woman against sunnah? I have severe waswasa and I found out that except for Hanafi's, others consider the feet as awrah. Are my prayers invalid as I didn't cover it after knowing about the ruling. Why do Hanafi's not consider the feet as awrah. I feel scared that my namaz isn't valid. What should I do?

Q: Is salaah valid when one is performing salaah individually at home while wearing pyjamas or other night attire?