it's interesting how a lot of us have different size preferences.
lulu...i do not like english sizing myself and understand your dillema. according to english size charts i am a size 6-8 in the waist, two to three sizes bigger on top and bottom! their clothes, from the places i've shopped seem to be cut very straight up and down. women have curves! i love topshop but am afraid to buy from there because of it.
i am 5'9" and weigh only 125 pounds. i'm just above being underweight for my height. and want to gain ten pounds. it is difficult for me to buy clothing because my waist is only 24", my bust is 36" and my hips are 37"(pushing 37.5). so in jeans i have to size up for my hips and get things altered. dresses are easier, but nothing fits my waist, and it is really annoying. so i usually end up wearing a size 4 in dresses, but it depends on brand and style.
so i would like to be a size 6. there i no perfect size, but i would like to be a six. i don't see the big deal with being skinny. i am skinny, and i have been a size 0 before (before they invented the 00) and i see girls that are around a 6-8 and i envy them. they look great in jeans! i try to gain ten pounds to get to that size, but i can't, so you have to accept your body at some point. even size 10 looks good. i think the size you look healthiest at is a good size!