You'd think after 104 years together, they'd be able to tell each other apart.

But even Cao Daqiao and identical sister Cao Xiaoqiao seem to be doing a double take after being named the world's oldest twins.

The inseparable pair - still fit, active and the best of mates - have become local celebrities in Zhucheng, Shandong province, China.

The previous oldest twins were Japanese sisters Kin Narita and Gin Kanie, born in 1892. They died in 2000 and 2001.

wow gotta say , dat is sometin.104 really .

ya

wow gotta say , dat is sometin.104 really . Wea r d 4rm