Shelly Klutzberry

 Shelly Klutzberry (voiced by Candi Milo) was born on November 17th, 1991. Shelton's older sister who has less appearances than her brother. She resembles her brother but doesn't change appearance when her glasses are taken off. In "Late Night With Todd and Riley" she is first mentioned as Shelton's sister and also we learn she loves Dustin Dreamlake. Though never mentioned, she presumably already had her bat mitzvah.