What is the ideal hip size for a waist of 25 and bust of 32?

There is no answer to that as women come in all different shapes in sizes.

If you'd say you're average weight, I'd say nothing bigger than 35".

It depends on her shape. If shes tall or small. Curvy or skinny. I'm 5'0" my hips are only 32 inches(14, female) and my waist is 22 inches.