I think in America (all I know) they end up intertwined as aspects of one another through the way media shapes perception and social reinforcement.
Mostly, I think it depends on the individual. The higher you go in terms of class, the more the 'system' changes you to be more representative of that respective class.
If you're a dude that made it from the hood to corporate... You don't stay corporate by staying hood, it changes you to conform to that white/blue collar middle class or risk compromising your position.
Unless of course you're a rapper or the like.. They sell the image of a culture representative of the 'lower class', but I guarantee that's not the way in which they conduct themselves when doing business.
On the first page a few posters seem to have felt like class was innate though, judging people on their actions, more than social perspective. A few users are even posting internationally.
At a Facebook seminar, Mark Zuckerberg told us that he wears the same t-shirt jeans and sneakers every day so that he's not distracted by fashion choices. His net worth is 33 billion dollars. I recently read in an interview that he connects literally half of the developed world with Faceook, and he's currently working on developing internet connections in third world countries that don't even have running water. Many people wear the same clothes every day, but because they have no choice and most likely don't have the luxury of being distracted by fashion neither.
There are places in the United States where poverty is so preponderant, that people wear the same t-shirt jeans and sneakers every day and America labels them "lower class" based on economic status. However, there's countries in South America, Africa, Asia and Australia where people unaffected by globalism wear tribal garments every day and they are held to high status in their village or kingdom.
So is class innately subjective or objective? Do we form synergy or cohesion based off of our similar goals? Or is it predetermined by probability?