Can you wear a Kimono top over swimming suit?

My sister is a fashion designer and she is making clothes for her fashion show. She is making a Kimono top without the bottom part because its a dress. So I asked her about the bottom and she said the model will wear a bathing suit under it. Im told her she should not do this because it might not be right for her to design a Kimono like this. I am scared that her design would be a disgrace to Japanese culture.