I've only being visiting AAM briefly and infrequently in the last few weeks but I had to post on this thread. I agree, men shouldn't wear flip flops. Sandals, fine. BUT, women shouldn't wear;
Ugg Boots (extremely unflattering and tinker-ish)
Tight jeans and short tops leading to the aforementioned muffin top. (simply horrific)
Pyjamas in public (if you can't bother putting on day clothes, stay in bed)
GAA jerseys (they're bad enough on men)
The best looking and most practical attire for a woman is an apron. I jest, of course.