You should know that shorts and all kinds of T-shirts are usually totally inappropriate to walk in public (except beach).Jeans are considered inappropriate too, although today jeans and T-shirts wear in city almost all Russian young people.Another important fact: Russians always give an odd number of flowers in the bouquet because even (pair) number is used only for funerals.
Also, some of them dismissive of child-rearing, when compared with Western men (of course, it applies only to some people).
For Russians labels or design are not so important; the main thing - that the clothes looked beautiful and pleasing to the eyes.
Very common at Russian men are dark clothes (mostly, gray and black).
You should welcome your Russian guy with pleasant handshake, looking him straight in the eyes - thus you’ll show your openness and honesty. This means that your dress style should be pleasant but look not too provocatively.
On Russian dating accepted that a man brought to a girl flowers (especially if it's a first date).
At Russian there also are moments, like the above (and it is good); but most of the time couples organize their cultural activities together.