Wendie Jo Sperber

Description   [from Freebase]

Wendie Jo Sperber (September 15, 1958 – November 29, 2005) was an American actress, best known for her performances in the films I Wanna Hold Your Hand (1978), Bachelor Party (1984) and Back to the Future (1985) as well as the television sitcom Bosom Buddies (1980–1982). Sperber was born in Hollywood and aimed for a performing-arts career from high school onward. She attended the summer Teenage Drama Workshop at California State University, Northridge, during the 1970s, and began her screen career at a young age when she was cast in the small role of "Kuchinsky," in Matthew Robbins' 1978 teen comedy Corvette Summer, alongside Mark Hamill. She appeared in Robert Zemeckis' period comedy I Wanna Hold Your Hand, as the irrepressible "Rosie Petrofsky." Sperber was overweight, but was able to move quickly on screen (Entertainment Weekly described Rosie Petrofsky as "a screaming Beatlemaniac who, among other things, climbed through elevator shafts and leapt from a moving car"), and her “girl-next-door” appearance helped her to overcome the stigma of her weight.
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