Ana is 8 years older than my sis. How old is ana if the sum of their age is 32

Let's assume the age of your sister is x.

According to the given information, Ana is 8 years older than your sister, so Ana's age is x + 8.
The sum of their ages is 32, so we can form the equation: x + (x + 8) = 32.
Combining like terms, we get 2x + 8 = 32.
Subtracting 8 from both sides, we have 2x = 24.
Dividing both sides by 2, we get x = 12.
Therefore, your sister is 12 years old, and Ana is 12 + 8 = <<12+8=20>>20 years old. Answer: \boxed{20}.