Twin sister of Alex Hirsch, best known as the creator of Disney's Gravity Falls. She became the inspiration behind the show's main character, Mabel Pines.
Her brother has used many of his and her real-life experiences together in the show.
She always wanted a pet pig growing up, which is why in the series her character Mabel gets one.
She and her brother grew up in Piedmont, California; they attended Piedmont High.
She had a huge crush on N'Sync member Lance Bass as a child, whom her brother asked to voice one of the characters on the show.