Selma Bouvier-Terwilliger-Hutz-McClure-Stu-Simpson (née Bouvier) is one of Marge's older chain-smoking twin sisters, who works at the DMV and possess a strong dislike for her brother-in-law, Homer. Selma is the adoptive mother of Ling.
Despite being identical twins, Selma and her sister Patty have very different track records when it comes to finding dates. According to Marge, Patty chose a life of celibacy, while Selma had celibacy thrust upon her. Her standards are extremely low, as evidenced by her comments on Mr. Burns: "Single, eh? Well, he passes the Selma Test."
Selma has actively sought out a husband, having been married a total of five times. Her current name has evolved into Selma Bouvier-Terwilliger-Hutz-McClure-Stu-Simpson, after failed marriages to Sideshow Bob, Lionel Hutz, Troy McClure, Disco Stu, and Abraham Simpson. One person Selma refused to marry was Apu Nahasapeemapetilon, because she said her collection of last names was long enough without Nahasapeemapetilon added to it. However, in season 20 there is photographic evidence that she slept with Apu after Homer and Marge's second wedding. Selma has also dated Hans Moleman, Moe Szyslak, and pitifully, Barney Gumble.
Unable to find companionship in a husband, Selma has also sought
to have children. At one point she was considering using a sperm donor.
After babysitting Bart and Lisa for a day, she realized that although
she wanted someone to love, she was not ready to have children and wound
up adopting Jub-Jub, her Aunt Gladis' pet iguana. Later however, a very
menopausal Selma adopted a Chinese baby, Ling Bouvier.
During the adoption process, Selma pretended to be married to Homer,
since the Chinese government only allows children to be adopted by
married couples. When the fraud was exposed, Selma managed to keep the
baby, as a Chinese dignitary who had also been raised by a single parent