FreeButtonBee - "Their stuff is amazingly versatile. have a go. It all looks hideous in theory and then you try it on an somehow it looks amazing!" I agree. I really thought, when I first tried things on, it would look ridiculous on me. Its not the easiest place to shop in, either in store, or online, as there is lots of stock. But, if you take your time, you can find some great things. Snap - I had twins, too. Total physical blow out, looked freaky.
lurking - a small frame hides zero weight gain, but its mainly how I feel, to be honest. Sounds like you are the same?
I am small size 10, hourglass, 5'4", and if I size down to XS / size 34 (their 8), Cos clothes are skimming, which I like. Although I think some of the trousers, I had to wear size 10, which aligns w Remus' comment.
If it helps, here's a post of me trying things on there, so you can see how it works w curves (I know I am small, though): theworkwearedit.com/trying-it-on-at-cos-part-1/
kablooger - its your writing style, so I have to wait for a few of your posts so I know its you. Esp since there is someone else who writes similarly, was it RonaldMcDonald? Yes, 1 Sept sounds good.