Feeding 1 year old cat..?

My cat just turned 1 years old on Febuary 14. I've heard that you are only supposed to feed cats (1 yrs and up) dry food. Is this true? What kind of scheule should I feed her on (Like, should I only feed her twice a day, with dry food?). Right now, she is eating wet food (We give her wet food on breakfast and dinner), and dry food always. We always have her dishes out, so she always has some sort of food (Wet,dry) for her.
 
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