Always try on the gown before ordering it. When ordering a gown, make sure you order the correct size. If you are between sizes, order the larger one. Don't forget to ask when your gown will arrive, and be sure to get this in writing. The gown should arrive at least six weeks before the wedding so you can have it tailored and select the appropriate accessories to complement it.
Some bridal boutiques have the practice of ordering gowns a size larger than needed.
This requires more alterations which may mean extra charges. Ask for all alteration pricing in advance. Tailoring is a great source of income for boutiques. Also, gowns often fail to arrive on time, creating unnecessary stress for you. Have the store manager state, in writing, when the gown will arrive.