Kelly and Stacy are characters that were cited by Shelly in the Season 18 episode, "#REHASH". They are cited when Shelly asks her parents to go to the Women of Rock show with her friends Kelly and Stacy. They are later seen alongside Shelly during the show watching the Lorde, who was actually Randy in costume. They are sometimes seen in cafeteria scenes talking to other 6th Graders.
Kelly has shoulder-length curly blonde hair and wears a long-sleeved gray shirt with green flowers on it, blue jeans and black shoes. Stacy has braided brown hair and wears a pale green waistcoat over a dark green shirt, gray pants and black shoes.
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- "Jewpacabra" - Seen in the Easter egg hunt.
- "Stunning and Brave"
- "Hummels & Heroin" - Seen watching Marcus Preston's speech.
- "Tegridy Farms Halloween Special" - Seen at the school assembly.
- "Let Them Eat Goo" - Seen in the cafeteria.
- "Board Girls"- Seen at the Board Girls Gaming Club.
- "Christmas Snow" - Seen ice skating.