He's just tapping into the fact that's what most Chinese people believe a beautiful Western girl to look like; a few years ago it would have been Lady Gaga, before that it would have probably been Britney Spears. Basically, whichever Western popstar's tracks get selected most in the KTV clubs at the time.

Chinese people's encounters with Western culture do tend to be rather limited, but despite the best efforts of the government to 'protect the local culture from foreign influence,' our major record labels and movie studios manage to infiltrate the ears and minds of their youth, far more than their billion dollar soft power/propaganda campaigns can ever influence the youth of the West.