From Wikipedia, the free encyclopedia. Katharine Payne Towne (born July 17, 1978) is an American actress. Towne was born in Hollywood, California, the daughter of actress Julie Payne and Robert Towne, an Oscar-winning screenwriter, director, and actor. Townes career began with a small role in the 1998 movie Girl. She then appeared in Go, Shes All That, But Im a Cheerleader and The Bachelor, as well as guest-starring as Sunday on Buffy the Vampire Slayer. In 2000, Towne starred as Riley on NBCs short-lived sitcom M.Y.O.B. Since then she has appeared in a number of feature films, including The In Crowd, What Lies Beneath, Town & Country, Mulholland Drive, Evolution, Something New and Blades of Glory. She also played a character called Erin in Sweet Home Alabama; her scenes didnt make the final cut, but were included on the films DVD release. Towne played Mason on HBOs Tell Me You Love Me.