Bonnie's costume consists of late 1930s retro fashion, with an A-line skirt, form-fitting top or sweater, and a beret and scarf. Clyde's costume is a pinstriped tweed jacket and pants, white button-down shirt, dress shoes and a fedora.
Bonnie and Clyde both wore standard clothes that were fashionable during the Great Depression in the 1930s. A major part of the two costumes are the beret and fedora. Bonnie and Clyde each carried handguns while on their crime sprees, so complete the costumes with toy guns. A great reference for Bonnie and Clyde costumes is the 1967 movie "Bonnie and Clyde."