I recently bought a sample gown for my wedding next summer. The store I bought it from promotes selling their gowns off the rack. Of course they told me that it had only been tried on maybe once or twice, but it is in excellent condition - I can't find anything actually on the dress that needs to be cleaned. Even the inside and bottom of the dress is clean. The store told me that I would not have to clean it, but I am starting to worry that if I don't something will show up over time. Does anyone have any advice? I don't want to clean the gown if I don't have to.