When I got married, I was careful to carry something from each of these categories down the aisle; a beautiful old dress, new Kenneth Cole shoes and a borrowed blue garter to fulfill the last two requirements. I don’t believe I gave it more thought than that. Had I done so, I might’ve had a glimpse into the origin of this saying as it is the ne’er stated last line that gives us our best clue.
Something old,
something new,
something borrowed,
something blue,
and a silver thruppence in her shoe.