A different option for re-purposing your dress is to cover the top with a shirt and just show off the skirt. This is a great way to tone down a really formal gown or make a revealing neckline modest and work-appropriate.
RedBD 2 Coral Bridesmaid Dresses That Can Be Wore Again
RBD167 / Short V-neck Coral Bridesmaid Dress / £59
RBD166 / One Shoulder Coral Short Bridesmaid Dress / £59