Happy boys are the most handsome.
Oh, I am sorry because it seemed that only pretty girls can be happy. Now I see that you mean being happy makes one prettier than when one is unhappy. I agree!
Happy Girls have the nicest eyes. Happy Boys have the nicest eyes.
I like Bruce's comments. I always like to look at others' eyes. And smiling eyes and faces are the best. If you have a smile, even when you don't feel like smiling, you can give that smile to someone else. If they might be having a bad day, you gave them a smile to light their dark moment. When they smile back, they reflect a spirit of happiness back to you. Share you smile and be happy! I am sure that if you read many definitions of happiness, pretty isn't mentioned.