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Cost is part of the problem. Jewellery based accessories in particular cost quite a lot more than tailoring accessories like ribbons. Also unlike Lusternia, there's also little to no incentive to dressing up.
The power of your influence skills increases the higher the prestige of the clothing and jewelry you wear. The exception to this are the charity influence skills, which is more effective with tattered rags than fancy clothes (i.e., the lower the prestige of your clothing, the better you are at charity influence attacks).
From the Lusternia wiki. They have a non-lethal form of 'bashing' called 'Influence' where instead of just mindlessly killing everything in sight, you can also choose to talk denizens around.