I received my K/A t-shirts yesterday.
I got the 'haven long sleeve' in white and black in size 2 and 4 to compare sizes.
They are made of the 'Technical Cashmere' . It looks like they actually have 2 versions of the Technical Cashmere: one that's mostly modal and one that's mostly viscose. I got the viscose.

Here are some observations:
1. The size charts on the K/A site are correct for me. My bust is 33" which puts me at a 4 and the 4 was indeed better than the 2. (I'm a 2/XS in Banana Republic and J Crew for reference.) The 2 is still ok though.
2. The fabric is very very very thin - see pic 2. You can't just wear a nude bra under a white top, IMO. You'll have to wear a cami.
3. The fabric is very soft. Softer than viscose. I like it.
4. The fabric is very stretchy and a little clingy - more stretchy./clingy than a regular drapey viscose T. The clinginess is mitigated if you get the boyfriend fit or the west coast fit.
5. Packaging is over-the-top, as ummlila mentioned in a previous thread. The box had a magnetic closure. See pic 1.
6. Very good coverage of the derriere. The issue is it's a bit clingy so I'm still not sure I'd pair this particular 'boyfriend fit' as they call it with leggings. I would want something looser.

Free returns in Canada - great news!

I ordered these at full price in order to get an idea of size. I'll be returning them and ordering some final-sale items. They'll get my magnetic closure box back, which hopefully they'll reuse--what a crying shame if they don't!

I didn't have time to take pics of myself in the shirts, I'm sorry!

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