Why is dressing feminine frowned upon these days?

At work I try and dress feminine and professional. When I pull it off to a tee I notice that I get a lot of comments, and people look at me like a tramp. Today I was wearing a long plaid skirt, with black boots (only 2.5 inch heels) and a reasonable sweater. This was very business professional. However, I am 5'10" barefoot, and slim. So when I try and just look pretty - just pretty - I feel like I am treated in this world like a tramp. What is going on? The people who treat me this way are fat or culturally prudish, or intellectual in their dress. Why is it a sin to look just plain pretty anymore?It does seem to me that people are not used to seeing a woman who is dressed like a woman. Our culture seems accustomed to seeing gals in jeans, t-shirts, even ladies "business wear" is patterned after mens suits with the small change of a tailored skirt instead of trousers. It is sad, indeed, when being feminine is looked down upon. Does anyone else agree?