ah blur, Usually you can start choosing abt 3mths b4 your AD, but i tink for DEC brides, you should start browsing in aug, cos, next year super alot of sep brides, so most of the gowns will be either taken out or is with the seamstress pending last min altering. And, aft that, the gowns will be sent for cleaning, and may be going for another round of altering for another bride.
so, i tink you may not glimpse the prettier selections if you go later. BUT, if your BS dun need much time for the altering, den you can choose your gowns neared to ur AD, so pls check with your BS first wor.
As for your PS, you should start choosing gowns at least 2 mths b4 your PS to allow time for alteration, and your PS should not be less than 3 mths before your AD, so that your BS can produce your PS album in time for your banquet.