What are some good vitamins to reduse horomones and stress?

Spinach, red bell peppers and fish with omega-3 fatty acids.

If you have a decent nutrition and are not generally sick then it is unlikely that you require any additional vitamin intake. If your hormone levels are normal then nothing should be done to alter them. But stress can promote any number of health issues including acne. For information on stress and how to deal with it, check out this site:
You may also want to visit your dermatologist for medical advice.