I tend to assume that comeliness is an element within charisma, so beautiful women or handsome men will tend to have high CHA, all else being equal. I don't like the idea that low CHA is necessarily either ugly or dislikable though, although extremely low CHA is probably both.
EG in my game here are two low-ish CHA characters:
Jasper the friendly dwarf: CHA 7 - homely-looking dwarf, distinctly uncharismatic, no leadership ability, but friendly and fairly likable. A good 'sidekick' type.
Alesh Marin, Mother of Obedience of the Scarlet Brotherhood: CHA 8 - beautiful Sueloise ice-maiden, her physical perfection matched by her cold, cruel demeanour. Sociopathic (if not for a magical ring that keeps her LN, thanks to Slerotin) and highly dislikable, cunning schemer.
EG in my game here are two low-ish CHA characters:
Jasper the friendly dwarf: CHA 7 - homely-looking dwarf, distinctly uncharismatic, no leadership ability, but friendly and fairly likable. A good 'sidekick' type.
Alesh Marin, Mother of Obedience of the Scarlet Brotherhood: CHA 8 - beautiful Sueloise ice-maiden, her physical perfection matched by her cold, cruel demeanour. Sociopathic (if not for a magical ring that keeps her LN, thanks to Slerotin) and highly dislikable, cunning schemer.