I bought this to wear either alone or over sleeveless dresses and tops, and this fits the bill perfectly.  It is a bit low cut, but not excessively so.  On me (34B), there's just a modest bit of cleavage showing.  The fabric is decent.  I like the simplicity of the style.  It is hip length, so it covers the midriff (if you want it to;  otherwise, you can leave it unbuttoned at the bottom like the model shows for a more revealing fit).  The long sleeves make it pretty versatile.  It's light enough to wear as a cover up year round.  I only wish it came in more colors!  I normally wear a 4 or 6; the small fit me perfectly.