As of current data, the most successful clothing brand in the world is Nike. With its strong brand image, innovative marketing strategies, and a wide range of products that cater to various demographics, Nike has consistently maintained its position as a leader in the global apparel industry.

most successful clothing brand, as success can be measured in various ways such as revenue, brand value, market share, and customer satisfaction. Moreover, rankings and success can change over time.

However, some of the most prominent and successful clothing brands globally, as of my last update, included:

Zara (Inditex Group)
H&M (Hennes & Mauritz)
Nike
Adidas
Gucci (Kering Group)
Louis Vuitton
Dior
Cartier
Zara