Jeffreys had a long career, one that started when she came to New York in the '40s as a soprano who sang at Carnegie Hall.
On the set of "Step Lively" more than 70 years ago with Ol' Blue Eyes
After several movie roles, including in "Step Lively" (1944) opposite Frank Sinatra and in several Dick Tracy serials as Tess Trueheart, Jeffreys replaced leading lady Patricia Morison in the original Broadway production of "Kiss Me, Kate" in 1949.
Prepping to go on in "Kiss Me, Kate" in 1949
Alongside her husband, Robert Sterling (who died in 2006), she starred in the early-TV sitcom "Topper" (1953-1955), playing a mischievous "ghostess with the mostess" who could only be seen by one flustered banker.
Jeffreys with her husband and co-star Robert Sterling on the set of "Topper"
Jeffreys made many TV guest-starring roles, and was a series regular on "The Bob Cummings Show" (1959), "Falcon Crest" (1982-1983), "Finder of Lost Loves" (1984-1985), "Baywatch" (1993-1998) and "Port Charles" (1999-2003), along with her long-running association with "General Hospital" (1984-2004).
Jeffreys, who remained active and attended numerous red-carpet premieres and events, is seen in 2013.
Her final appearance was on HBO's "Getting On" in 2013.