Everyone knows "something old, something new, something borrowed, something blue", but few are aware of the last line - "and a silver sixpence in your shoe".
Something Old... This refers to the Bride's old life and her family. Though she is leaving them behind by wearing something old, she is showing that she still remembers them.
Something New... Wearing something new represents the hopeful success and good fortune in the Bride's new life.
Something Borrowed... Borrowing an item already worn by a happy Bride is believed to pass on the good luck.
Something Blue... Blue is a sign of purity (Japanese normally marry in blue). This follows the long tradition of Brides being pure on their wedding day and their commitment to their future husbands.
And A Silver Sixpence... Though possibly uncomfortable, this represents wealth - not just financial wealth, but spiritual wealth, happiness and good luck through married life.