I finally found this shirt on e-bay but it's TOO SMALL.  It's more like a 4 or 6 and requires a smaller waist than I have.  NWT, originally $50, asking $30 plus shipping.  I did find it at H&M and the size 12 is what ended up fitting - despite needing an XS in the dress I bought.  ARGH!

Let me know if you want measurements. 

http://www.hm.com/us/product/5....._vc=SEARCH