Patty and Selma Bouvier

Marge's older twin sisters
Both unmarried, 40 years old
Referred to as the "Gruesome Twosome" by Homer
Patty does not part her hair.
Selma does part her hair.
Patty wears necklace with oval beads.
Selma wears necklace with round beads.
Patty has no interest in men.
Selma remains on the prowl.
Selma was briefly married to Sideshow Bob.