You'll never encounter a parent who thinks their baby is ugly. That's fair enough; it would be harsh to call any baby ugly, because they're all beautiful in their own way. Most parents though are completely convinced that their precious child is the most beautiful ever to have been born, and there's no telling them otherwise.
Sometimes, as seen in this drawing, you'll overhear another set of parents discussing how gorgeous their baby is. You'll peek a look yourself, and completely disagree. Then you realize that they're seeing the baby through rose-tinted glasses, so of course it's beautiful to them. Maybe you're doing the same with yours. Maybe you think your child is beautiful, but everybody else thinks it's hideous! We're sure they aren't, but it doesn't matter even if they were. They will always be beautiful to you.