Not that they haven't thought about this: The cardinals are in "choir dress" during the voting, which has translucent lace sleeves under a short red cape, making sleight-of-hand tricks much harder.
Tadashi Shoji was inspired by the Romanov Empire for fall and you can see this influence in the velvet dresses combined with lace, in the tiered numbers and the use of dramatic red.
Since then she worn everything from a red asymmetrical goddess dress from Lanvin (BAFTAs), a short frilly lace number from Bottega Veneta (MTV Movie Awards), a challenging floral print column gown from Lanvin (Alexander McQueen Costume Institute Gala), and a collage-like short frock with a train from Chanel (Vanity Fair Oscar Party).