Choose tight underwear in winter, preferably V-neck, and emphasize that the upper body should be exposed more. The coat can be cotton, hemp or waist-length. The waist can be tied with a belt to increase the overall fluency. Or choose a small windbreaker with light and transparent fabric, va va voom. It is very popular in Europe and America now. The top is a slim suit and the bottom is bloomers.
It goes well with your booties,
You don't have to wear a white shirt to look mature. Just put a specially designed bottoming shirt inside, and the color will be selected with reference to the color of your shoes.
Or the coat is a short coat and so on.