Women: Skirts should definitely be below the knee. I don't think long skirts are necessary but maybe for church and other more formal occasion maybe they are good idea. I am very anti pants on women. I suppose jeans are ok for very casual events, but when I ever meet up with a woman for a date and she is wearing jeans, I instantly know she really isn't that into me. I think the most important thing is to cover the chest area. It never ceases to amaze me how many even good moral standing women take liberties in that area.
For daily wear, i am most apt to grab an A-line dress or skirt with blouse since they look OK on anyone, are modest enough for Mass, professional enough for my job, acceptable for my school despite not being leggings w/ a tight half-T (how do they wear those things anyway? although i do prefer leggings to actual hoseiry), and i don't care how appreciated they are for the rest of the real world since i prefer dresses to pants anyway. i like to wear matching business jackets and yes, shoes (i do have a cabinet with probably 100 pr of leather shoes from when i was an active sales professional making too much money with too little time so am still wearing those styles and haven't had more than 1 new pair of shoes in the last 5 years).
There is nothing better looking than a sharp-dressed man in dark suit, light colored shirt, leather wingtip shoes or moose mocs (but there are many great styles today in any of these as well). Actually, it doesn't matter what he's wearing as long as he's covered since the open-shirt/no-shirt look are not appreciated. For casual, khakis, jeans, whatever isn't too tight or noticably loose since it is pretty gross to be distracted by a man's crack. Cloths are really good on a man.
For casual dress, I am in love with the long, cargo skirt. It's feminine, but it is playful and comfy and casual, and depending on the fabric, it can even be somewhat dressed up.
For dressing up, I am all about layering little jackets to cover my arms, since a lot of dress tops nowadays aren't perfectly modest.
Casual for men:
I totally prefer rolled-up sleeves to short sleeves and in the summer, lighter fabrics with long sleeves.
I really don't like flip-flops on anyone.
For dress up, like for Mass, I always prefer a jacket than than just a nice shirt by itself, but that's just me.
Now that I've got the ball rolling, I'll let some other people provide their suggestions and later I'll mention the stores I prefer for modest clothes for men or women.
Yeah, we should all dress modestly, but I don't think that protects us or others from sin. If a person has a pure heart, they'll view others in a respectful manner, regardless of what they wear. If a person lacks pure of heart, lacks self discipline and entertains sin, they'll find sin anywhere, regardless of what others may wear.
Also, "attraction" is not a dirty thing. It does not mean that one's imagination is entertaining sin. Based on reading Lynea's posts in other threads, I'm certain that her definition of attraction is pure and similar to thinking that someone is "cute" or "handsome".