Polly Dean Holliday (born July 2, 1937) is an American actress who has appeared on stage, television and in film. She is best known for her portrayal of sassy waitress Florence Jean "Flo" Castleberry on the 1970s sitcom Alice, which she reprised in its short-lived spin-off, Flo.

Her character's tagline of "Kiss my grits!" remains perhaps the most memorable line associated with the series Alice. Holliday was born in Jasper, Alabama, the daughter of Ernest Sullivan Holliday, a truck driver, and Velma Mabell Holliday (née Cain).

Before acting, Holliday worked as a piano teacher in her native Alabama, and then in Florida.

She began her acting career as a member of the Asolo Theatre Company in Sarasota, Florida, where she stayed for 10 years. Holliday sang in the St. Andrews Episcopal Choir in Mobile, Alabama and in January 2010 she appeared as herself in an official advertisement campaign for the Episcopal Church.

In New York City, she sang in the Grace Church Choral Society in Greenwich Village and ran a chamber music series there called the Willow Ensemble. In 1976 Holliday was cast, in what would be her major break, as sassy, man-hungry waitress Flo Castleberry on the American sitcom Alice.

Holliday starred in Alice from 1976 to 1980, and then moved to her own short-lived spin-off show, titled Flo, in which Flo left her residence in Arizona and moved back home.

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