http://www.styleite.com/media/world-war-ii-evacuee-costume/
QUOTE
Are you going to be a World War II evacuee for Halloween?
This is a costume that exists! And it’s for little girls! Some company called Girls Fantasy is selling it, and it is the WORST! The costume in question involves a navy dress, 1940s-style flats, a beret, and a satchel with some sort of tag. IS THIS A JOKE?! All that’s missing is a yellow star.
The inspiration seems to be Anne Frank (who, for the record, never escaped the war and died in a concentration camp). Holocaust-related children’s costumes: bringing offensiveness to a whole new level.
Except this has nothing to do with the Holocaust; this is about British children who were re-located to rural areas to avoid being bombed by Jerry.
The costume itself is (as one of the commenters on the blog post pointed out) probably really a "Lucy from Lion/Witch/Wardrobe" costume, without those fancy-pants "licensing" fees.