Wedding dress from Goodwill?

Ok, I am slowly gathering things for my wedding and thought to go to Goodwill because glassware (candy dishes) are cheaper. I happen to pass the formal section and there it was...the dress of my dreams, and in my size! I paid $50 for it and came home to google the actual price which was $1100 give or take depending on what store it is bought from. MY QUESTION IS....where do I tell people I got my dress from if they ask. Most people would cringe at the idea of buying a wedding dress at goodwill......but honestly .....i couldn't resist! My bank account thanks me :) oh yeah...and the professional cleaning tag was still attached :)