The "something blue" portion of the saying almost certainly started in medieval Rome, where blue would have been a symbol of loyalty and fidelity. Finally, a silver sixpence worn inside the shoe was meant to bring good financial fortune towards the newlyweds. In recent decades, brides dropped the "silver sixpence" part, though it's now rather easy to discover a genuine silver sixpence (thanks towards the Internet). Additionally, many wedding supply stores and dress shops actually have them on hand for couples which observe the full tradition. http://www.blogster.com/bravorings