We suggest taking your wedding gown to a professional for cleaning and to someone who is experienced in cleaning high end fabrics.  Dress cleaning can range between $150-300 and should be done promptly after your wedding for the best results.   Here is who we trust at The White Magnolia:

American Cleaners
4178 Herschel Street
Jacksonville, FL 32210-2245
(904) 389-2514
*Ask for the owner, Steve