Sometimes it can be hard to determine what qualifies as inappropriate, but if you just ask yourself some basic questions you should be able to figure it out! Is it white? Is it showing too much skin? Am I covered in feathers and sequins? Do I look like a cast member from Jersey Shore? If you answered yes to any of those questions, go back through your closet and find something else. Even if you know you will look amazing in your favorite going-out dress, remember, this is a wedding and not a club. This is about the couple, not you. You are not supposed to be the center of attention, so pick something simple, with an appropriate color, and hemline. Also, think about what kind of wedding it is, if it's an outdoor barn wedding, a maxi sundress is a great choice, but wouldn't be appropriate for a black-tie affair. And keep in mind some brides don’t go with traditional white, so try to avoid cream, blush, and champagne colors.