www.ivysdomain.com
Mirror
.... The tradition that a person will suffer seven years bad luck if he or she breaks a mirror ranks among the most widespread and persistent of all superstitions.

.... Belief in the mystical power of mirrors has survived into modern time, not just in the taboo against their breakage. . Some mothers harbour a prejudice against allowing their babies to see their own reflection before they are a year old, for the fear of the shock will retard their growth or develop crossed eyes. It was also believed that it could bring about crib death.

.... Brides are commonly warned not to look at their reflection in a mirror while trying on their wedding gown before being wed. particular if they are wearing a vail as this will endanger the happy outcome of the marriage plans.
 
.... A very old belief that looking into a mirror by candle light for to long time will bring about the devils face into the glass in response to such vanity.
 
I.M.Summers