If you will need robe put on over other clothing or pajamas, a kimono style robe is a good different.
The Christians has social responsibility for all people, but especially to other believers (Romans 12:13 / Galatians 6:10). http://www.silverbardgames.com/wiki/doku.php/seks_bag%C4%B1ml%C4%B1s%C4%B1_diya_bak%C4%B1_esco_t_bayanla_%C4%B1