I know this has been discussed before, but I think it's getting worse...
I was just thinking after a recent shopping trip to j crew in London. I have not shopped there much but have a top from there, purchased about 5 years ago. It's a size small. But when I went there recently I tried on lots of tops and for some only XXS fitted me... I am petite and slim, but not a scrawny midget! About 5'3 tall and 50kg.
I have also noticed that Whistles have recently introduced size 4 and 6.... Size 8 there used to be fine but now I have to size down...