Cynthia Pepper (born 4 September 1940) is an American actress whose principal work was accomplished during the early 1960s. An irresistible Barbie Doll TV version of Sandra Dee at the time of her brief small screen reign, the pert, pretty and pixieish actress with the cutest slight overbite proved to be a lovely fresh-faced by-product of the innocent early 60s. In 1961, Pepper starred in her own 26-week series, Margie, in the role of the Roaring Twenties teenager Margie Clayton.
After Margie, Pepper appeared in 1964 as PFC Midge Riley with Elvis Presley in the film Kissin' Cousins. In 2002-2003, she appeared in television documentaries about Presley's life and recalled her own experiences with him.
In 1964, Pepper returned to My Three Sons for a final guest appearance. In the story, she returns to fictitious Bryant Park to see Mike Douglas one more time but learns that Mike is engaged to Sally Ann Morrison. That year she also appeared in Perry Mason as Annalee Fisher in "The Case of the Drifting Dropout". Thereafter, her roles were limited to guest appearances.
In 2005, after retiring from acting Pepper made a cameo appearance in Miss Congeniality 2: Armed & Fabulous starring Sandra Bullock.