Ao Dai is a unique cultural feature, imbued with Vietnamese cultural characteristics, that has been confirmed through historical periods, many social and political events, and scientific conferences and festivals, national and international cultural exchange. The Vietnamese Ao Dai not only shows solemnity, elegance, and grace but also represents the Vietnamese people's virtues and dignity. A Collection of Modern Ao Dai Designs features designs by John Trinh during the Covid19 pandemic along with other paintings published in World of Art magazines, Top 10 Contemporary Artists artbooks. The designs in this collection have the essence of artistic creativity, design suggestions, reference, and research, covering many genres and forms, ranging from decorative, realistic to abstract, and also national nuances, composed by John Trinh himself. Through this collection, the author hopes to bring to the young generations of Vietnamese Ao Dai designers ideas, and forms of presentation, to create bolder, stronger, and more modern designs with richer colors and more diverse and attractive materials, whether the dress is cut in a traditional or novel style. The collection is a gift to readers with the desire to have a strong spread in social life, contributing to honoring the national cultural heritage of Vietnam and the world.