I've only tried it on, and the person I bought it from also never wore it. It still has the tag attached to the collar. The back waist ties are detachable.
I bought it for $125 before shipping, and would like $115 for the blouse, including shipping and insurance within the US. If you live outside the US, ask me for a shipping quote. My paypal is firstname.lastname@example.org
Let me know if you have any questions. Thanks for looking!