Washington, Feb. 14 -- Anne Hathaway shared that the Southern drawl used by her character in the 2010 film Valentine's Day was something she came up with all on her own.

She shared a post on her Instagram handle, "Three movies with Garry Marshall? Color me grateful. Valentine's Day came out FIFTEEN years ago," reported People.

In the caption to the post, which included a clip of one of her scenes from the film, Hathaway added: "enjoy this clip (where I inexplicably decided to give the character 'Katya' a southern drawl ) Happy Valentine's Sugar"

Hathaway's character in the film, Liz, is a receptionist who moonlights as a phone sex operator (at times named Katya) and begins dating the office mailroom clerk Jason (played by Topher Grace)...