When I first opened the package and saw the sleeves I thought, "no way in the world", but I tried it on anyway.  The sleeves look absurdly small, but they do stretch when you put it on.  Also, the super skinny part starts at the elbows, so if your upper arms are bigger (like mine), it's not a problem.  However, they are very short,  Those models must be super tiny, cause these sleeves are 3/4 sleeves at best.

I'm typically a 14/16 in tops and like things baggy.  This shirt does fit me and is loose, but nothing like the model.  It fits like a standard baggy sweater/sweatshirt.  The top comes to my upper thighs for length, so it is long enough that it can be worn with leggings, but not anywhere near even mini dress length.  It is a thin sweater material (not sweatshirt) and a little scratchy due to the 5% wool.  Hoping that'll be fixed once I wash it and use softener.

EDIT for update: I washed it yesterday on gentle cycle, cold/cold, then dried on "very low" for 20m.  It did not shrink and the fabric softener did fix the itchy factor.