STYLETHREAD -- LET'S TALK SHOP!

I saw this in Elle's post about searching for a yellow vest.

I really love it in black, but I've never ordered from Anthropologie before! Do they run TTS? It says that it's made of cotton and modal (but it doesn't give the percentages), and I'm right on the edge of a size. I guess I'm worried about the cotton making it shrink, but if it runs large anyway I could get away with the smaller size.

Also, if anyone has seen this specific one, can you tell me how form-fitting it is? My chest and my waist are two sizes apart, so it's hard to order online a lot because of that