The sizes are ridiculously small. I am a size EUR38/UK10 and your small-medium was too small. I exchanged for a large-exlarge (as this is the only other option) and it’s still very fitted and only marginally bigger than the S/M, especially around the arms. I compared your L/XL to another tank top I have which is a UK 10-12 and yours was considerably smaller which makes no sense at all.