BM is the abbreviation of Brandy-Melaville and zara, H &；; M is an Italian fast fashion brand with the same form, but Brandy-Melaville mainly sells girls' clothes, paying attention to simple design and highlighting girls' figure. With the increasing popularity, a BM style has emerged, which combines most California styles, pays attention to the lively and enthusiastic image of girls, emphasizes the sexy side of girls in simple design, and changes between sweet, cool and sexy. Among BM styles, plaid skirt knitted blouse is the easiest to identify. The ordinary knitted jacket is designed with buttons, which makes it look more delicate. But also can modify the figure, with the same color plaid skirt, giving people a playful and lively feeling. Secondly, cardigan knitted jacket with high waist loose jeans not only perfectly abides by the visual principle of tightening up and loosening down, but also achieves a high visual effect, which is simple but not simple.