I saw this picture on gofugyourself and had to giggle.
Because when you see anyone else, ever, dressed like that you back away slowly and call the authorities, but when Helena Bonham Carter does it, all I can think is "oh, HBC, you are so delightfully wacky." I very much adore her, from her big hair in A Room with a View, to her chain-smoking flippancy in Conversations with Other Women (fabulous movie, btw), to her absolutely mad insanity in Harry Potter. Maybe it's because I'm re-reading HP right now in anticipation of the movie, but I'm so excited to see her reprise her role as Bellatrix.
Oh, and it also helps that she can look like this, too.