Sindy boyfriend Paul was released in 1965, and her younger sister Patch in 1966. Sindy's friends Vicki and Mitzi, and Patch's friends Poppet and Betsy debuted in 1968. Sindy was the best selling toy in Britain in 1968 and 1970. Sindy's success in the 1960s was partly due to the increasing range of accessories, with up to 70% of Sindy's turnover from sales of accessories. Mattel did not greatly expand Barbie's accessories until the 1980s, and this was a significant difference between the dolls. During the 1970s, Pedigree focused on developing more Sindy products and neglected advertising and market research, risking
Mitzi McCall comedy recording, "From Our Point of View", released by ABC Records. Later that year, the duo signed with Congressional Records. In the early 1960s, McCall and actress Joan Shawlee formed a team to perform as a night club act, debuting the act at the Club Robaire in Cleveland. In January 1961, syndicated newspaper columnist Dorothy Kilgallen reported that the team was "causing quite a stir", and she cited the partners' discrepancy in height — "Joan being six feet, three inches tall and Mitzi four feet, 10 inches short." In 2009, McCall had a supporting role as Bonnie in the film