Shelley was cast as Tiffany Welles in Charlie's Angels in 1979; and everyone was so excited to see THE Charlie Girl become a Charlie's Angel. But by 1980, she had moved on. She signed a one-year contract with the show which had a three-year option; and she opted to leave the show and move on to other things after a year. "I never expected to be there more than a year and I wasn't," Shelley told TV Tales: Charlie's Angels in 2002. "So I did my year and I moved on," she added, "That was just fine. That was plenty for me." But the publicity jump start she got from Charlie's Angels made her a Hollywood superstar nonetheless and she was considered one of the glamourous new luminaries of tinsletown. Also, she was determined to make something of her big break. In the 1980s, she was able to work with some of the best actors and directors in Hollywood like Robert De Niro, Martin Scorsese, Dick Van Dyke, Sid Caesar, George Segal, Joseph Ruben and Terry O'Quinn. She made the most of her big break.