When getting ready to do some digital drawing the most important elements of your outfit will be a constricting turtleneck (for reigning in your most creative ideas) and t-strap heels (for helping you to buckle down to the task at hand). A high waisted plaid skirt (which forces you to suck in your gut) and a statement necklace (that weighs heavily both literally and figuratively) complete this look which leads to maximum efficiency.
Just kidding. Obviously the only thing you can wear when doing drawings of any kind are pyjamas.