Q. 1. What is a "White Wedding?"
A. 1. The tradition of a "white wedding" is commonly credited to Queen Victoria's choice to wear a white wedding dress at her wedding to Prince Albert in 1840.
Royal brides before Victoria did not typically wear white, instead choosing "heavy brocaded gowns embroidered with white and silver thread," with red being a particularly popular color in Western Europe more generally.
Since then, it became a tradition to wear white at a wedding.
During this time, a myth came into place that the white dresses represented virginity. Such was an invented story. Some even believed that if you had a child out of wedlock, you had to wear a short white dress at your wedding. These are all myths.
White as a liturgical color has nothing to do with the bridge. White has to do with the joy of the occassion. Would you go to a wedding dressed in black? No! Black is usually worn at funerals.
While white is a preference when one is getting married, you are free to wear whatever color you like. Some prefer light colors such as light pink, light blue, light green, etc... It is your choice.