There is nothing wrong with being skinny Laura, I am slim, but I am one of those people who has nervous energy and never puts any weight on, which does make many jealous.
When you can fit into a really thin dress, then it is great
Many complain about this "Size Zero" thing and I do think that many of those who do have that figure, perhaps do go too far and starve themselves to get like that.
But, if someone looks at a girl/woman and takes the pi*s, because they are skinny, then just ignore them and be glad that you are that way.
Many overweight men/women would love to be skinny.
Regarding the 8's size. Luckily in the world of the internet, finding size 8 is a doddle. If shops don't accomodate, then the internet can really help.
nodisharmony