More dress deets:

I used a (very easy) Vogue Pattern, #8615. The neckline is super wide, so I added a couple of inches to the front and the back (which has a fairly deep V) of the shoulder seams. That polka dot fabric is the lining I used - which showed through the red/orange of the dalek fabric more than I expected.

Polka-Daleks? Anyone? Hello?

The pattern also has a seam down the center front - so I cut the pattern as carefully as I could to make sure the yellow border was centered at the front and waist seams. You can see it's not perfect; thinner in some spots.
Purchased a crinoline at Unique Vintage, and all set!