http://www.jcrew.com/womens_fe.....VlCos205OQ

I am thinking about buying this dress from J.Crew. It claims to be "four-season" weight, and I'm desperate for versatile dresses that can be dressed up or down. I'm afraid it might be too warm in the summer, though. Plus, I'm not quite sure how to jazz it up other than adding a cardigan. Any opinions on this, or ideas for summer casual work dresses (preferably sleeveless) for an apple shape, would be much appreciated! (p.s. nothing too trendy since I'm well into my 40's!)