Really, if there’s ever a time in your life that you shouldn’t need to make any effort to improve your appearance, it’s when you’re a baby. Humans are wired to find them adorable.
I know what you’re thinking: “What about ugly babies?”
Yes. There are ugly babies. But it’s not like that baby is getting passed over for promotions, or having trouble making friends. A baby doesn’t care about any of those things. The only impact being unattractive has on a baby’s life is fewer strange people invading their personal space, making kissy faces AT THEM. I doubt that the baby would see that as a problem.
Also, if a baby is ugly enough that it does impede their social interactions, I don’t think giving the baby earrings will help.