I Know What You Did Last Summer (1997) - A Fish Carnival Hat (Light Blue)This is a prop fish carnival hat used in Director Jim Gillespie's Hit American slasher Movie 'I know what you did Last Summer' (1997). The light blue hat is made of foam with painted detailing & an elasticated strap. These hats can be seen being worn by extras in the crowds when Helen (Sarah Michelle Gellar) rides in the 4th July Parade as the reigning Croaker Queen. The hat comes mounted on a custom display base incorporating an acrylic display head