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 catchphrase of "Kiss my grits!" remains the most memorable line associated with the series Alice.