Galeery Of Nightmare Before Christmas Wedding Dress. One of our brides is planning a Nightmare Before Christmas themed wedding this fall. See moreideas about Christmas wedding themes. This calls for a magical gown, of course, and Christmas wedding dresses conjure some of the most mystical and chic looks. Getting married in the off-season? These beautiful wedding dresses prove that you don’t have tosacrifice style for warmth or vice versa!