I followed the pattern for size S. My gauge was ok, or at least I thought it was.
Because the final garment is made up at the end by commenting the 3 pieces together I only fully realised that I had an issue with the size. I have a couple balls of yarn left over and the final garment will fit a kid not an adult :(((( The yarn is not very suitable for frogging so will have to give it away. I took me 2 months to make it up and wasn’t cheap so a bit disappointed.