These can be anything to do with apparel & clothing and if it is extreme, the only thing that will stop your submission is a tagged photo or if it has been done before (Besides for the obvious rules such as no nudity or explicit sexual material).
The You Dress Weird site also has a forum section, where you can get to know other members and grab a few tips on what is classified as funnier clothing styles.
The forum section also has a Rank system that is directly based off of the amount of posts you make in the corresponding forum.
As well as having an Administrator running the whole Moti Network, You Dress Weird also has a dedicated team of Moderators who see to that all users follow the rules and approve/reject the Submissions to the site.
UPDATE: As of 2016, You Dress Weird is offline and its domain name is for sale. Its contents were not archived.