You can be cynical about it and say it ups the ante of celebrity uniqueness. But it does enhance the stature of a celebrity because it shows the person is open-minded and cosmopolitan enough to take in children with great needs from around the world.
You show some cleavage on an actress. You make her look sexy. You make her look hot. She needs to be hot -- because in Hollywood, you have to be sexy to be a successful actress. You just have to be.