Kindly refer to the following link(s):
Praying in transparent socks for women
Is it Compulsory for Women to cover their feet while praying?
Transparent socks or socks with holes: can we go out, wipe over or pray with them?
Must women cover feet when praying? If shape of feet is seen with socks, prayer valid?
Can a woman pray with her feet uncovered?
Also see: Ruling on covering the hands & face in prayer for women