Genuinely, that is good. People who care and judge how others look beyond normal social propriety tend to be pretty bad to be around.
There are many caveats with judging people by their appearances, but complimenting someone on the part of their look they put unusual effort in for some unusual occasion, seems pretty healthy to me.
(Well, there's also the caveat that the rich ones will have better access to exquisite clothes to begin with…)
Watch how many of them are buying exactly what their friends buy, so they can fit in and relax a bit.