Yes, you're not wrong, it's a Sailormoon fan-art! This is for a upcoming Tribute show in Los Angeles, US. More info to come!
Ink and watercolor on Fabriano paper.
More pics on my Tumblr at: nati-art.tumblr.com
SORRY for the huge amount of stupid spam messages on this entry, I reported it to dA staff in hope they soon will solve the problem.