Kristy is known for her great ideas as well as her bossiness and a big mouth that can occasionally get her in trouble. The idea for "The Baby-Sitters Club" came to Kristy when her mother was having trouble finding a babysitter for her younger brother, David Michael. She felt sorry for David Michael, as well as her mother. In a "flash", as she calls it, Kristy had her "great idea" to form The Baby-Sitters Club. Kristy formed the club with herself, Claudia, her best friend Mary Anne, and Stacey as founding members. Kristy usually wears jeans and a T-shirt (in the winter, a turtleneck and, if needed, a sweater), sneakers, and sometimes a baseball cap with a collie on it, in memory of the family dog, Louie, who was put to sleep in Kristy and the Snobs. She loves sports and coaches a softball team for small children called Kristy's Krushers, which includes many of the club's sitting charges. Kristy comes from a large family, composed of her mother, Elizabeth, her stepfather, Watson Brewer (her biological father walked out of her family when Kristy was six years old), her two older brothers, Charlie and Sam, her younger brother, David Michael, her stepsister, Karen, her stepbrother, Andrew, her grandmother, Nannie, and her sister adopted from Vietnam, Emily Michelle, who is two years old. The family's pets include Shannon (a puppy), Boo-Boo (a cat), two goldfish and, after Boo-Boo is put down, they get a kitten and name it Pumpkin.