I agree it could be cultural. However, I've witnessed various prejudices in the work environment. Okay, this was around 30 years ago and times have now changed (mostly!).

I agree with sarahsweets, it is short-sighted. You should be judged by your ability/experience. If you've made the effort to dress and present yourself appropriately at least for interview that's a plus point too.

What you can't legislate for is the personal prejudice that may appear after you've accepted the role. During my working life, I experienced comments about my height/weight. In one company it was obvious I was a poor substitute for the tall leggy blonde I'd replaced. Then in another, the HR Director apologised for her assistant's attitude towards me, which appeared to be borne out of jealousy.

Now with advent of social media, girls/women are supposed to be perfect. If there's the slightest flaw, then you can be vilified.