I orderd a large white vinyl catsuit from this online company and they sent me a small size that would probably fit a 12 year old child. Large is 6-12, this was around a 2.
They are a China based company, when I contacted them about an exchange, possibly getting a XXL that would be around the size of an L in their size structure they told me 'we do nothing wrong, you get a large' and would'nt take it back.
Don't waste your money on these Commie gangsters.