One of these Identical Twins is a Smoker. Can You Guess Which One?

Is it the twin on the left or on the right?

Is it the twin on the left or on the right?

Both twins are actually smokers, but the twin on the left has been smoking 17 years longer than her identical twin. You can see that the twin who has been smoking longer has larger bags under her eyes and more lines around her lips.

Is it the twin on the left or on the right?