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Unearthed Arcana was AD&D 1st edition... and I really liked the way they did it. You'd roll it up like the other stats but it was then modified by your charisma, if you were a jerk then you'd be less appealing to others whereas if you were very charismatic you'd appear a little more attractive.
Used it a lot back in the day, especially with newer players. I found it helped them realize what charisma was supposed to be instead of seeing it as just attractiveness, which is what a lot of new players took it to be.