In my opinion, if you are going to wear this sweater with a simple tee you need a necklace to prevent it from going totally casual (not that there is anything wrong with casual. As you know I am casual most of the days). I decided to try the Northern Lights necklace in gunmental, that I bought a few weeks back when the stores were running a 25% off promo on jewelry (after seeing it on Andrea from The closet chronicles. Glear blog BTW, check it out if you haven't yet). I had a hard time in choosing betwen the golden one and the gunmetal and I went with the gunmetal because I have a lot of grey sweaters/tees for the winter.
Anyway, I think it looks great with this sweater:


For a look a little bit more sophisticated, you can wear a Victoria cami or other ruffled-neckline cami. I love the Victorias because they add some pizazz (is it really a word?) without adding bulk (but I don't wear them alone, only under cardigans). They still popback on the website and if you happen on one in your size I wouldn't hesitate to grab it, especially in a light color (they are even worth paying the shipping IMO if you don't have anything else to add to your cart):

While I am at it, I wanted to show you the Cashmere zip cardigan that I got yesterday with that crazy sweater promo that the stores are running (must resist buying 42 cashmere sweaters). I got it in the heather saddle color (which is as camel as you can get at JCrew this season) and I love it. I am happy to announce that this one doesn't suffer from tight sleeves syndrome and it hits me below my hips. This is my usual XS and I can even conceive wearing a long-sleeved shirt under it, yay:


Are you taking advantage of the sweater promo? Are you buying JCrew cashmere this season?