How to clean my wedding dress before the wedding?

This is your wedding gown. It's an important, delicate thing! You're doing the right thing by having it tailored, but you should be very careful with the cleaning as well. Many dry cleaning shops also offer tailoring and alterations. Seeing as how the dress will already be there getting tailored, they may clean it for you for a discounted price or even for free. If this is not something they offer, speak to your tailor (or a professional at the shop where you purchased your dress -- assuming it was a department, dress, or bridal shop and not a regular clothing store) and ask for safe, effective cleaning methods for the fabric your dress is made of. Satins, silks, and other fabrics bridal gowns are often made from are very fragile and do not respond well to many harsh cleaning products. Best to leave it in the hands of a professional. A few extra dollars for the cleaning will save you alot in the long run, considering you could easily ruin your dress by attempting to spot clean it on your own.