Mae Whitman

Mae Whitman is the voice actress who voices Heather.

Biography
Mae was born in Los Angeles, California to another voice artist, Pat Musick. She began her career at age 3 with a voice-over for a Tyson Chicken commercial. Whitman attended Ribét Academy, a private preparatory school in LA. Though she was later transferred to Whitefish Bay High School, where she graduated.

Trivia

 * Mae also does Heather's singing voice, and in fact has recorded a few songs for the 2002 Schools Out! Christmas album.
 * Heather is also the name of characters from Grey's Anatomy and ER and were also portrayed by Whitman.
 * She voiced Katara in the critically aclamimed animated series, Avatar: The Last Airbender.
 * She voices Disney's Tinker Bell in the Tinker Bell movies.