I got the open front cardi in the ivory.  I went up a size from my normal size small to a medium.  This was based on other reviews and past purchase of this cardi in another color.  It fits fine but the sleeves are a little tighter than I would like and its pretty sheer.  I think the darker colors are more opaque. This one has longer, more full length sleeves than the light grey one I already own.  It goes nicely with a dress I also just purchased off Amazon and its a nice light weight layer for summer so its definitely a keeper.