Whee, finally posting this!
I once did a painting series of the Mane Six, and somehow I got the idea of doing Rarity's a little more stylized, like a fashion sketch, and with all the elegance and poise befitting her.
This was an expansion of that idea, done for a commission. I had so much fun working on this. I don't work this loosely most of the time, and I got to use and discover some new techniques.