Something Malina said this morning in reply to your blog post caught my attention. She said that often armholes are designed such that they cut across her biceps.

Like Mo, I find that many jackets cut my arms in a similar way. Even in slimmer juniors' brands like Miss Sixty, it doesn't seem as though the shoulders are too tight, as I can move my arms forward with no pulling across the back. Instead, I get the tightness across the front, right at the tops of my biceps/where my arms meet my upper chest. It also happens in non-juniors' brands where you'd expect a more generous cut.

I assumed this was the result of very high-cut armholes or bustiness issues, but maybe not? Can you shed some light? I find it happening more frequently across brands and it's frustrating:(