She did you could say (https://www.sitcomsonline.com/boards/showthread.php?t=357544), bring a sophisticated, east coast quality to the seminal role of Tiffany Welles.

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And this video really captures the beauty, sophistication and essence of Shelley on Charlie's Angels.

I love the video. Thanks for posting. And, yes, I do feel that Shelley Hack was, indeed, underrated. I thought she was great on the show.