This is a new with tags Jason Wu for Target Blush Top from their 2011 collaboration.  It's a sheer blouse with white polka dots and long sleeves.  The top is a size small and in perfect condition.  Made of 100% polyester and machine washable/dryable.  Some approximate measurements:

 

from armpit to armpit-18"

from shoulder to hem-23"

from shoulder to sleeve cuff-24"