I dress up everyday. If I go out looking as if I haven't made an effort then I think that communicates the message to others that I don't have any self-confidence/respect - and that sort of person comes off as unapproachable. I would say I dress for myself in that I don't dress up in order to gain attention. Plus, I'm a total girlygirl: I love make-up, perfume, jewelry, nail polish, cute shoes and my wardrobe mostly convinces of mini skirts, hot pants, cardigans and tight tops. ^^;
On days I can't be bothered I'll still be dressed, brush my hair and wash (whether it's just face/teeth or taking a shower) before I even go downstairs to see anyone. I won't bother with make-up or jewelry but I won't be sat around in just sweats and a t-shirt either (in fact, I don't even own any of the former).