2 nordies posts in quick succession.....can you tell I'm being tempted to place an order?

This dress that Angie posted about has really caught my eye,especially as I've been thinking I needed a wintery black dress to replace my existing 3/4 sleeve one thats looking a bit bedraggled.

http://shop.nordstrom.com/S/3126030

I was wondering if anyone had tried it on and can comment on fabric/sizing? As usual I don't know whether to go for M or L.

Oh and its now 33% off for anyone else that's interested!!!

Cheers!
tam