She became well known for her flamboyant outfits, over-the-top personality and her trademark catch phrase said in a drawling speech of "Oh Dahling".

Her success transferred to cabaret and theatre when she landed roles on Jerry's Girls, Legends and Marlene – A Tribute to Dietrich.

"[2] Among the overseas guests she appeared with were US actor/comedians Phyllis Diller and George Burns,[3] and British theatre actor Danny La Rue.

[7] Her stage career took off with Jerry's Girls, in which American director John Frost teamed Little with well known entertainers Marcia Hines, Debra Byrne and Judi Connelli.

[2] She then subsequently appeared in Legends with Kerrie Biddell, Toni Lamond, and Nancye Hayes at the Sydney Opera House.

[11] In 2019 Katie released a black humour memoir titled Catch a Falling Star - A Story About Growing Up With Jeanne Little.

[12] She was diagnosed with rapid-onset Alzheimer's disease in 2009, and was cared for in a Sydney nursing home, where her husband Barry (1929–2019) also resided.