How did WW1 influence the fashion of American Women in the 1920s?

I have to write an enormous essay for my school diploma. My question is, (along the lines of) How did WW1 influence the development of flapper fashion, in the 1920s.

Any suggestions would be very helpful, also, if i could be directed to some quality sources (especially newspaper articles, from archives and the like, and reliable websites) that would be fabulous.

Cheers!

Up until WW1, wedding dresses were always black, but after WW1, because of the excess of parachute cloth, wedding dresses were white.