I would dearly love to do any sort of cosplay from Discworld. Not sure what yet. But with my physique (and with the popularity of dwarves thanks to the Hobbit movies over the next few years) I think I should go for Cheery Littlebottom.
I would want to have two outfits, probably for a Saturday on a con weekend.
Daytime: standard dwarf look, beard etc., and City Watch uniform with skirt option. Forensic alchemy kit. Obvious lipstick.
Evening: ballgown and high heeled boots. More makeup. Same beard.