Kimberly Jean Brown Is an American actress and former child model She is known for her roles as Marah Lewis 3 on The Guiding Light for which she earned an Emmy nomination Annie Wheaton in the Rose Red miniseries an original miniseries written by Stephen King teen witch Marnie Piper on the Halloweentown series 13 only and Sarah Sanderson in Bringing Down the House By the time she was 11 years old Brown had already enjoyed success as a child model with Ford Models and performed in multiple Broadway shows At the age of 13 Brown was cast in her most notable film the Disney Channel Original Movie Halloweentown in which she played 13yearold teen witch Marnie Piper She reprised her role as Marnie in two sequels In 1999 she costarred with Janet McTeer in Tumbleweeds She also starred in another Disney Channel original movie the 2000 film Quints She portrayed young Christine Chapman in My Sisters Keeper 2002 Sarah Sanderson in Bringing Down the House 2003 and Tiffany in Be Cool 2005 She had a recurring role as Shana Taylor on AMCs Low Winter Sun and appeared in the YouTube series Christys Kitchen Throwback In May 2021 it was announced she had joined the cast of General Hospital