The answer to the crossword for the term 'Blue Velvet Actress' is DERN, which is the surname of the actress Laura Dern. Dern is an American actress, director, and producer who has been nominated for numerous awards, including four Academy Awards and six Golden Globe Awards. She is best known for her roles in films such as Jurassic Park, Wild, and Marriage Story. Her most iconic role was in the 1986 film Blue Velvet, where she played Sandy Williams.