Diane Carol Sherbloom, born in 1942, was the elder of Thomas and Ruth Sherbloom’s two daughters. Diane, known by friends as “Dee Dee,” began skating at age ten, along with her sister Joan, age seven, at Jerry Page’s Ice Studio in Los Angeles. She joined the Los Angeles Figure Skating Club (LAFSC) and trained at the Polar Palace ice rink in Hollywood and at the Iceland rink in Paramount, California. Her coaches included Helen Gage Moore, Joan Zamboni, Bill Kipp, and Bert Wright. She was the 1958 Pacific Coast bronze dance champion with Ray Chenson. The following year, she and new partner Roger Campbell won the 1959 Pacific Coast silver dance title. At the 1959 U.S. Championships in Rochester, New York, they placed second in silver dance, behind Larry Pierce and Marilyn Meeker. Returning home to Southern California, they dissolved their partnership.
After placing seventh in gold dance with Howie Harrold at the 1960 Pacific Coast competition, Diane retired. Dancer Ray Sato had coaxed her to compete with him in the 1961 season, but then she received an unexpected call from Larry Pierce. His dance partner, Marilyn Meeker, had broken her ankle and he invited her to come to Indianapolis as his temporary partner. After five weeks of intensive coaching with Danny Ryan, Larry and Diane won the 1961 U.S. dance title.