When Shelley became Charlie's Angel No. 5 in 1979, everyone wanted to know everything about Charlie's newest cherub. Write-ups about her immediately came out as soon as it was announced she got the part of Tiffany Welles in the hit series. "The Charlie Girl becomes Charlie's newest Angel" was the headline Aaron Spelling was counting on to help bring interest in the show which was entering its fourth season. In the past season, the show had dropped from #4 to #12 in the Nielsen ratings; and the casting shake-up was just what the series needed to bring audiences back.