Wow this is a great topic! I love the way everyone has broken down what they wear when/where. It's so nice to read for those of us, like me, who are new to all of this. I know I'm a little late for joining it, but I've been gone for over a week and now I'm trying to catch up. I'm still not sure what category all of my clothes fall into, but here's my list. I know it could use some improving, but that's what this group is for.
School (where I spend most of my time): casual (either with a skirt or pants depending on the time of year), or my "nice clothes," or smart casual (on Fridays).
Church: Either smart casual or what I would call my "nice clothes." They aren't really "business formal" or "business casual" so I'm not sure what to call them. Maybe sometime I'll post some pictures and try to get help defining what category or clothing type they fall into.
At home (cleaning, doing homework, and working out): Jeans that I wouldn't wear out of the house (too big and too short) or my one pair of athletic pants with a boxy t-shirt. I'll wear tennis shoes to work out, but other than that I wear mostly ballet flats at home. I do not own any sweats and almost never wear my sweatshirts. When my husband gets home I try to change back into school clothes to make him happy.
Grocery store: Sadly, usual the same as at home, but sometimes I'll go more fashionable casual or smart casual. I know I need improving here.
Restaurants, movies, shopping, etc.: Smart casual or casual, same as school.