Former San Francisco Mayor Willie Brown (second from left) and San Francisco fashion designer Anthony Cruz Legarda (right) hoist the hands of Shanghai Professor Zhang Zufang (center). Zhang collaborated with the San Francisco- Shanghai Sister City Committee on eco-friendly designs and fashions for models and delegates of San Francisco Week.

More than 100 members of San Francisco Week's cultural artists and performers dazzled Shanghai and were dazzled in turn during the World Expo 2010 in Shanghai.

"Unlike other cultural visits over the past 30 years," said San Francisco-Shanghai Sister City Committee Chairman James Fang, "these artists had a green wrinkle, along with the contingent of business and municipal leaders during San Francisco Week from June 17 to 25."

They recently returned to the Bay Area.

"We established a new path of cooperation along with mutual cooperation on sustainable energy and green technology. This 30th anniversary was not a conclusion of our relationship but marked a new beginning of a new chapter," he said. "Our green theme and cooperation even touched our fashion designers, artists and cultural performers."

San Francisco designer Anthony Cruz Legarda and Shanghai's Professor Zhang Zufang collaborated on green outfits for delegates and models at a US$50,000 breast cancer awareness benefit supported by the Sister City Committee and Marvell Cofounder Dai Weili. Proceeds went to the Shanghai Charity Foundation.

Legarda called their work "fusion fashion."