If Marilyn Monroe had been super-stacked and worn green in The Seven-Year Itch... "Excuse me," Karina said as she pulled on this dress. "What is the seven-year itch?" Ah, to be young and Czech! The Seven-Year Itch, as we explained to Karina, was the 1955 movie in which Marilyn Monroe wore her famous white dress and stood over a subway grating in New York.