Why wedding dresses are white

Son asked his mother the following question:
"Mom, why are wedding dresses white?" The mother looks at her son and replies, "Son, this shows your friends and relatives that your bride is pure."
The son thanks his Mom and goes off to double-check this with his father.
"Dad, why are wedding dresses white?"
The father looks at his son in surprise and says, "Son, all household appliances come in white."
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Before I get hammered for this, I did some research, and this is what I found:

White did not become a popular option until 1840, after the marriage of Queen Victoria to Albert of Saxe-Coburg. Victoria had worn a white gown for the event so as to incorporate some lace she owned. The official wedding portrait photograph was widely published, and many other brides opted for a similar dress in honor of the Queen's choice. The tradition continues today in the form of a white wedding, though prior to the Victorian era a bride was married in any color except black (the color of mourning) or red (which was connected with prostitutes). Later, many people assumed that the color white was intended to symbolize virginity, though this had not been the original intention. (It was the color blue that was connected to purity.) Today, the white dress is understood merely as the most traditional and popular choice for weddings, not necessarily a statement of virginity.
Source: http://en.wikipedia.org/wiki/Wedding_dress

So there you go. Both the father and mother were not quite correct, but not quite wrong either. =]