Shelley became Charlie's newest Angel in 1979. Kate Jackson left the hit TV series at the end of its 3rd season and producers Aaron Spelling and Leonard Goldberg needed a replacement for the upcoming season. According to Spelling, they were looking for someone long and lean like Kate. They were looking for a girl with "the right bubble and intelligence." New Angel Tiffany Welles was written as a Smith College graduate, a girl from the East who was not a voluptuous sexpot. After sifting through around 300 applicants, Spelling and Goldberg ran "personality tests" on 20 of them, then screen tests on 12, and Shelley emerged as the winner, as their final choice. Shelley fit the bill perfectly... she's a Smith College graduate (with a degree in history), she was born in New York and she grew up in Connecticut, and she had that classic model shape and beauty. "We hired her 40 percent from the screen test and 60 percent from the personality test," Spelling told TV Guide, "We decided she was a nice person with sparkle and intelligence."
