Justin? Um... You've... You've got a little something on your... You know what? It's fine. Barely noticeable.
Anyone familiar with the series could probably guess who Sarah and Elliot were dressed as based siply on them holding darts. Justin, meanwhile, is dressed / morphed to look similar to Garak, a character who is a simple tailor AND NOTHING MORE. That's all he does. Tailoring. Yes. Nothing to be suspicious about.
Note: Requests are paraphrased for clarity and brevity
Oh, and three classic sommentaries for today begin here.