1. Principles of collocation of autumn and winter maternity clothing. The principle of collocation of autumn and winter maternity clothing is to keep warm and comfortable, while also taking into account fashion sense and personalization. When choosing the material of your clothes, you can choose wool or down materials with good warmth retention properties. In addition, you should also pay attention to the color matching and try to choose earth tones or dark colors. This will not only look mature and stable, but also effectively cover body defects. 2. Autumn and winter pregnancy