This pretty floral dress was designed to heighten Grace Kelly's femininity when she breaks into Thorwold's apartment. To help to exaggerate this further Kelly added extra petticoats under the dress and wore high heels. In contrast to the other costumes we see Kelly in, this is the only one that has an obvious pattern on the material, a purposeful choice. It is of interest to see that in the accompanying press photograph of Kelly wearing this costume that she is holding a sun-hat, in the film this hat is absent.
See footnote to lot 84