I love abayas..
regarding "appropriate".. com'on guys.. we all know what fits this term and what is obviously sticking out.. when in Carrefour I see a girl in mini (and I mean it - really MINI, next to nothing) skirt, high heels, and straps top, sometimes even with no bra under this top , long hair all around the shoulders.. it really doesn't make sense. Like, hey do you really need to wear THAT to buy silly potatos and stinky onion?
Another thing, night club, you will look ridiculous in the turtleneck top, covered up to your nose and down to your fingers and toes..
It's all about a TASTE and sense of style. One has to know where what to wear.