One must look respectable at all times. There is definitely an inyan brought in kaballah (dont know source) of not allowing an image of ones self as it ‘peels away from one’s neshama’. This refers to any picture, photograph etc generally, and also not to see yourself with tefillin on even by reflection (window, mirror etc).
With whats going on around us nowadays, it is really important for both spouses to look attractive to each other, not only the wives but the husbands too.