This is the greatest idea ever. Not only is it great for Halloween, it would be perfect outfit for a real prosecutor. Negotiations would become incredibly one sided, something like this:
Sexy Prosecutor: I've looked at the file and the proof that your client committed the misdemeanor offense is very slight. I don't have a good case.
Me: Okay.
Sexy Prosecutor: But, I'll offer a plea bargain of exactly what that pedophile got last week - four life sentences.
Me: Okay.
Sexy Prosecutor: Stacked.
Me: Okay. We'll do it. Do you like Chinese food?