Everywhere people tell James he has beautiful eyes. I remind him to say Thank You each time. He says it very sweetly which gets more exclamations of how he's going to be a Heartbreaker, etc.
My kid is gorgeous. And sweet. And kind. I like to stress his good manners, his kindness, and how smart he is. Yes, he is beautiful and he knows it from all of these strangers.
He knows to bat his eyelashes and ask for things. I probably encourage this by laughing! I can't help it!