Diy Fleur Delacour Costume . In this video, i make the uniform worn by fleur delacour in harry potter and the goblet of fire. This is true for the costume of fleur delacour in harry potter and the goblet of fire (harry potter #4). Final Fleur Delacour costume. We tweaked a thriftstore dress, added from www.pinterest.com Click through to read five posts detailing how she made this wonderful fleur. King, author's board fleur delacour beaubatons harry potter costume, followed by 283 people on pinterest. The reason i chose a fleur delacour costume and not an overtly popular character (like hermione who i did dress up as when i was around 9 years old), was because i think if i.