Zhang Jingchu and Sammi Cheng each decided to wear a hat with cat ears, one at the airport the other at a fashion event. I don't know if this is the start of trend, but if it is there have been worse celebrity inspired clothing trends.
Zhang Jingchu with the cuteness meter turned to eleven:
Sammi Cheng looking glam wearing sunglasses at night:
The same outfit with some of the color removed:
Sina; Yahoo China