It's a Halsman but is it a McCardell?

Philippe Halsman

Who is she, anyone know? I'm kinda of curious about this photo. It's stamped on the back and was taken by Philippe Halsman. I'd bet that is a Claire McCardell swimsuit she's wearing. Claire launched what was called the Diaper Swimsuit in 1942. I want to say this picture is earlier that the 1950s attribution it's given. So maybe identifying the model would help. Anyone?