The term 'Animal House Party Attire' refers to the clothing worn by characters in the 1978 comedy film Animal House. The two crossword solutions for this term are 'TOGA' (4 letters) and 'TOGAS' (5 letters). TOGAS were the traditional garments worn by ancient Greeks and Romans, and they were also popularized by the Animal House movie. In the film, the characters wore white bedsheets fashioned into TOGAS as a humorous costume for their wild college party.