look no further than backcountry.
I just got 8 "organic cotton" shirts from them. two tramdock logo tees, size M and L, 3 XLT dog funk tees, and 3 size small whiskey milita tees.
they are the best fit i have ever seen.
Every single tee is tallish, and not fat at all. i'm around 6'2" and 15-160, suuuper skinny, repping that toothpick steeze, and even the size L doesn't look stupid. slim and tall. The XLT is beyond legit. for reference, the grey tee brogan wears in this edit, is the dogfunk T.
even the size small was sick on me. not H&M slim, but pretty slim, and TALL. I guarantee that these shirts will fit the bill for most of us, plus backcountry is LEGIT. I would love to see them bring back these pieces in the coming years, otherwise i don't know where i will find shirts.
here are the links.