I have three (3!) of the long sleeved version. I'm an apple, and they are very good at camouflaging the belly.
While loose, I don't feel the need to size down. In fact, two of mine are in a large (I'm currently a 12 in pants), and one is in an XL from before I lost some weight. I still wear the XL, it's just a little more drapey.
Peri - Since the sleeveless listing doesn't show the "tail" in the back, here's a link to the sleeved one where you can see it better. I"m quite fond of it because it covers up all my lumpy bits in skinny jeans, and I'm able to tuck in when needed. But.. I had a younger male at the office call it "interesting" in not a good way
http://shop.nordstrom.com/s/pl.....038;contex