Forever 21 Women's Forever 21 2010 Summer Women's New Different from the American casual style of other popular brands in the United States, Forever21 is more inclined to the sweet line. The design style is simple and lightweight, bright colors, and rich young people are full of vigor. Prev 1 2345678Next Full Story Different from the American casual style of other popular brands in the United States, Forever21 is more inclined to the sweet line. The design style is simple and lightweight, bright colors, and rich young people are full of vigor. 