Rachel Elise Blanchard (born March 19, 1976) is a Canadian actress. Her work has included playing Nancy in the British sitcom Peep Show, Emma in American comedy-drama series You Me Her, and most recently, Susannah in the American television series The Summer I Turned Pretty. Blanchard's career was launched with a part in a McDonald's commercial, and as an eight-year-old on the Canadian children's show The Kids of Degrassi Street, in which she played Melanie Schlegel. She also starred in the television series War of the Worlds as Suzanne McCullough's daughter Debi and in YTV's Are You Afraid of the Dark? as Kristen. Blanchard played the part of Cher Horowitz (originally portrayed by Alicia Silverstone in the film version) on the television series Clueless (based on the 1995 movie of the same name). She also played Roxanne on the television series 7th Heaven from 2002 to 2004.