I just saw an interview with a woman, I think the designer, who was wearing the dress, and she said it was blue and black. Sure enough, on her, it looked blue and black. However, in the photograph that has caused all the fuss, it looks to me like it's white and gold or maybe pale blue and gold (the lighting is obviously strange). They even did a brief split screen with the woman on the left and the photo on the right, and it looked like two different versions of the same pattern to me. I don't know what they did to the photo to change the colors.