Adding sleeves, changing necklines, etc.
I'm changing this dress with this: http://www.davidsbridal.com/Product_Lace-Ball-Gown-with-Intricate-Embroidered-Details-WG3512?cm_vc=Search
into this: http://i00.i.aliimg.com/wsphoto/v0/569460992/Zuhair-Murad-boat-neck-lace-wedding-dress.jpg