Octavia, after a trip to exotic Saddle Arabia! A fan requested a belly dancer outfit, and as it so happened a local cheap store had one of those out-of-the-bag party costumes, which I think fits perfectly! Would have been great if it included a face veil, but then again I doubt one designed for human heads would fit very well on an anthro pony head.
 
EDIT: Someone tagged the other one of this as “Princess Jasmine” - I can’t believe I missed the resemblance! Added tags accordingly.