Well, Pluto isn't a planet anymore. The scouts need a new girl. Sailor Anna?
Lunaria Boutique is selling these and other geeky leggings for $29.99 apiece!
DieselPunk days: Fighting evil by moon light, Killing people by Midnight
Chibiusa - Sailor Moon
If you know who the cosplayer is, let me know in the comments below! Thanks to SSJKALEL for the source!