well, looks like Jimmy haven't aged much, just not as boyish. Jimmy must be an alien!
However, Nicky Wu sure have aged and look a little different. Have Nicky ever had any plastic surgery/surgeries or botox injection(s)? His face/smile does not look natural in the CNY picture. What do you think? Nicky is 4 years older than Jimmy, so it's not surprising that he should look older than Jimmy.