Sally Turner

Sally Turner, also referred to as Powder, was first seen in "Rainforest Shmainforest" as part of the Getting Gay With Kids choir, but has been seen in the South Park Elementary fourth grade class ever since. Sally worked with Kenny McCormick on the egg science project in "Follow That Egg!". As of later seasons, she appears to have been demoted to a background character.

Appearance
Sally has similar hair and clothes to two other females in her class, most notably Red and Wendy. She wears a navy blue sweater and sea green trousers, as many of her female classmates do. Her hair is similar to that of Red's, except that Sally lacks bangs, and she has a pink clip tying her hair back on the right.

It is possible she wears a bra, despite her age, and stuffs it. However, chances are she doesn't, as Cartman and the others on the Sexy Action News squad in "Quest for Ratings" claimed they should "make up stories of kids and present it on the news".

In her first appearance she wore a normal sweater, though she wears one with a pouch in all of her appearances afterward. The pouch was initially yellow, but episodes in Season Five and on depict it as being bright pink. When she was into the "whore" fad in "Stupid Spoiled Whore Video Playset", she wore a lavender crop-top and a matching skirt and shoes. Sally was unique, being the only child character with red eyebrows, but in recent seasons they have become black, matching the other children.

A version of Sally with grey hair appeared in South Park: Bigger, Longer & Uncut, it is not known if this was Sally. It was likely a different character entirely as Sally is used as a character model for crowd scenes.

Mother
In the episode "Something You Can Do with Your Finger" she appears with her mother; who is stopped by the security guards. She resembles Heidi's mother in "Do the Handicapped Go to Hell?" and "Probably" which furthers the possibility of Sally and Heidi being related. She wears an orange sweater with green trousers and a white necklace. She has blonde hair.

Heidi Turner
Since Sally appears to have the same mother as Heidi as well as the same surname it's naturally assumed that Heidi Turner could be her sister. However, Heidi had a different set of parents in "Two Days Before the Day After Tomorrow" and "Marjorine".

Social Standing in General
She is commonly seen with the popular girls "clique", signifying her social status as well as confirming her position as a popular girl.

Prominence

 * "Rainforest Shmainforest" - First appearance as part of the Getting Gay With Kids choir. She was partnered with Stan Marsh.
 * "Hooked on Monkey Fonics" - She appeared for a brief second, at the party.
 * "World Wide Recorder Concert" - She was part of the recorder concert.
 * "Cartman's Silly Hate Crime 2000" - She was on the sledding team with Bebe, Lizzy, and Esther.
 * "Something You Can Do with Your Finger" - She appeared shopping at the mall with her mom.
 * "Cartmanland" - She was seen riding the rides.
 * "Proper Condom Use" - She was part of the group of girls fighting the boys, in order to protect themselves from STDs.
 * "Stupid Spoiled Whore Video Playset" - She appeared with the other girls, in the group, at the store, and in the pool with Heidi Turner.
 * "Quest for Ratings" - She appeared on the television, as part of the news show, and was reported to stuff her bra.
 * "Follow That Egg!" - She was partnered up with Kenny for the egg assignment.
 * "Pandemic" - She appeared for a brief second, at the shopping district with Lola
 * "Eek, A Penis!" - Seen in hallways; background only.
 * "Breast Cancer Show Ever" - Seen watching the fight; background only.
 * "The Tale of Scrotie McBoogerballs" - Seen buying The Tale of Scrotie McBoogerballs.
 * "Funnybot" - Seen in hallways; background only.
 * "Bass to Mouth" - Seen in the school hallways in the background.
 * "Cash For Gold" - Seen in the background on the playground with brown hair.
 * "Faith Hilling" - Seen in the memeing class with the other 4th Grade students.
 * "Butterballs" - Seen in the background in the hallways.
 * "Cartman Finds Love" - Seen in the background on the playground.