Sally Brown is a fictional character in the comic strip ''Peanuts'' by Charles Schulz. She is the younger sister of main character Charlie Brown. She was first mentioned in May 1959 and throughout a long series of strips before her first appearance in August 1959. Cathy Steinberg was the first to voice Sally in 1965 for the CBS special ''A Charlie Brown Christmas''; she was six years old at the time.
Provided by Wikipedia