/r/NSFWOutfits is a subreddit with just over 65,000 readers that devotes itself to clothes that are 'not safe for work'. The sidebar explains that this can be standard outfits that are a little naughty, or clothing that is themed with a certain profession (such as nurse, secretary, etc.). There aren't too many rules with submission and on the whole, the community seems pretty laid back when it comes to policing submissions and making sure that everyone sticks to the love of the subreddit.
While content is only submitted about three times a day, there's plenty in the archive for you to go back through if you want to check out good quality submissions. Also make sure you take full advantage of the 'top' search feature so that you can really see what's considered hot by the users of the subreddit. Oh, and you're more than welcome to submit your own content too - be it that you've collected or personal submissions. Some user-created content is submitted to /r/NSFWOutfits on a semi-regular basis!