So, for Costume Con 37, the Single Pattern competition had a wizard robe pattern. And for whatever reason, that made my brain go, "The next costume I do must be the Mathemagician!" (I was rereading an old classic, "The Phantom Tollbooth.")

I wanted to do the costume/character justice, so I picked fabric based on color and what I already had enough of (dumb mistake, as this is stretch velvet/velour... yes, you read that right), and then decided to hand embroider real equations all over it (on stretch fabric... oh, so much hubris and dumb...). So many costumes of the Mathemagician are just a robe with a few numbers/operators taped on and not like he was described/drawn like in the book, and I wanted to have an accurate portrayal. So... yeah... I was called the Crazy Embroidery Lady for most of that convention... ;)

The costume took over 350+ hours to complete, and because I didn't think the embroidery part would take so long, I put it off and subsequently spent 8 hours each day for 6 weeks straight doing nothing but embroidering the equations on the robe right up until the day before the competition (yes I have a real job, yes I still went to it, and yes I timed myself because slacking meant I needed to keep going).

I won Best Embroidery. And now, I have the best Mathemagician costume in the world! :P

My friend did a version of King Azaz (that's her in the photo on the right). Me by myself on the left, with the two middle pics being a few detail shots of the embroidery. I might do a small photoshoot at some point and get better pics of all over the robe. (Or, when the pro-photos are available, buy those and post them; I think they got me from all angles.)

I made a giant pencil (which I am redoing the tip of... I had to make that in a few hours before my flight, so it was not my best work), and the shoes have little abaci (abacuses? one abacus per shoe) on them. The equations are all real, and some are placed in strategic spots:
The Standard Model (with Gravitational Force above it) is at the bottom front right panel... because it's best to start out on the right foot.
A version of the Schrodinger Equation is near my left butt cheek... because it's a good CYA maneuver to just write that on every physics test.
PV=nRT is over my heart, because that equation is one I use every day at my job and is a long time favorite of mine (so frigging useful!).
And the front of both arms have integrals and derivatives on them, because you should embrace the world as Newton did.

Character belongs to Norton Juster. I'm just showing it some love.