I got my alterations finished yesterday I added a french bustle with an added (I don't know how to spell it but it sounds like 'pin-yay'- basically added tulle under in the back under the corset). The french goes inside the skirt instead of outside. Here are pics with the bustle already inside..so basically this is what it will look like at the reception:
Sorry, in the pic on the left, my sister was cracking me up!
Do you have a bustle? What kind are you planning to add? Here is a link of different kinds http://www.projectwedding.com/wedding-ideas/bustles-for-your-gown