[xcasex]

This all relates to trade dress, not copyright per se. there's also the question of originality i.e: Two men are wearing suits. Both suits originate in previous suits. The similarities that they therefore share would be those attributes of the suit that is not encompassed by previous works. So therefore, even though the two suits the two men may be wearing appear virtually identical, they are indeed not and do not share any substantial similarities to one another.

it's trés bothersome when designers behave like this when they're themselves just un/consciously influenced by previous artmovements and designers (florian freundt(2003), matias duarte spring to mind).