What is your ideal clothes size? I think for me it is a UK 6 (Amereican size 2) I don't know why. I might lke to be a 0 (UK size 4) but I reckon if I got down to 0 I would look unhealthy just because of my bone structure and size.
I'm already tiny and even some size 0 or 00 stuff is too big on me but whether am I comfortable in them is a whole another story. It's not about size for me, ok it is a little I admit I like getting the smallest size stuff in clothes etc but it's more about looking good and comfortable in them rather than the number labelled.
I used to be an American size 0 - 00 and it was just crazy to maintain. To try to stay in my size 25 true religion jeans was a bitch TBH. I would like to be a size 2 now (or hey, even a 4 - that's cool for a 5'4" girl like me), and I'm okay with that.