Power still wears Prada

In Shanghai, Hathaway was moved by the warm reception of Chinese fans, and expressed gratitude for their support throughout her career, dating back to The Princess Diaries.

"China and Chinese fans have given me so much support. You have embraced me. You have supported my films … I just want to say how much it means to me, to be here sharing tonight with you."

Both stars honored the host city through their fashion choices. Hathaway wore a layered gown created by Chinese designer Susan Fang and Streep accessorized her blue Saint Laurent outfit with a floral brooch by Chinese jeweler Cindy Chao.

In a lighter moment, Streep joked about her limited familiarity with the fashion world prior to the films, recalling her first-ever fashion show during the sequel's production in Milan, Italy. "I was so surprised by that. It is a theatrical event. The music is very loud and the models are so young and so thin, I just sat there wanting to feed them!" she says.

In China, The Devil Wears Prada 2 will be exclusively available in IMAX format, featuring screens more than 20 meters wide and 16 meters high.

"It's a romantic movie and our cinematographer Florian Ballhaus has done a wonderful job," Hathaway says. "I love that people are going to get to see all of these pinks and blues and all of the tones."

Also, "the costumes are so exquisite, especially what Meryl wears …So many of these things we only get to watch from afar, but some of these costumes are works of art, and you will be able to see them in a level of detail and scale never seen before."