Template:Actor infobox
Jennifer Stone (b. 1993) plays Harper.
Jennifer Stone was born in Arlington, Texas. She began her stage career at the age of six, after watching her brother in theatre productions. She signed on to an agency at eight, and began auditioning for commercials.
Stone's big break came when she was cast as the great niece of Robert Duvall and Michael Caine in New Line Cinema's Secondhand Lions alongside Mitchel Musso. She received a nomination for her role in Seconhand Lions as well as a nomination for her 2005 guest appearance on House. She also guest appeared on Line of Fire and Without a Trace.She is 17. She makes a small appearance in Phineas and Ferb as Amanda, Candace 's daughter.