Why doesn't Sarah wear clothes?

Demons have a much higher body temperature than humans and Sarah has inherited this from her demon blood. However, her human side finds this very difficult to handle and Sarah finds any type of fabric against her skin extremely uncomfortable Perhaps because of the inherent warmth of fabric, Sarah feels like her skin is on fire with prolonged contact.

Luckily she doesn't seem to have any inhibitions about wandering around naked. Perhaps she inherited that trait from her demon side.