I cannot imagine ever buying high end designer fashion even if expendable money was not a barrier. Some does look good, some actually is strange or unappealing.
I would get something that may have a style similar to the high end clothes, but ONLY if I really liked the style and NOT because I wanted people to think I was wearing those expensive clothes. I would save my money with the lower price clothes and maybe go on vacation or save for old age.
But that is just me. We each have our own preferences, priorities for our money, and so on. Others want to get such clothing, and do, and maybe that makes them feel good. That is fine as long as they can afford to do so.
Chrissy