Attractiveness and convictions.
This one is a quote from a website:
One of these is the attractiveness of the defendant. Darby and Jeffers (????) found that defendants that are more attractive are convicted less often and punished less severely, since the jurors see them as being more trustworthy and happier. The jurors' own attractiveness interplays with this effect. Unattractive jurors punish unattractive defendants less severely, since they feel they have something in common, while all jurors seem to favor attractive defendants (Darby & Jeffers, ????). In effect, this makes moderately attractive defendants the most vulnerable to severe sentences. But this is not any different from a judge's decision, as they are also affected by the attractiveness of the defendant (Downs & Lyons, 1991).
Here is a link to a study:http://web.sbu.edu/psychology/lavin/tracie.htm
It's safe to say that all such studies (and there are many) have flaws with regard to clothing. In real cases, experimenters can't ethically test, for example, by playing around with color and fit.
How to become an image consultant isn't as simple as some presume. The answer is going to require a little time and probably its own thread.