User blog comment:KingFire4IcePowerAAA/Mii That I Thought Had A Different Gender Than They Really Were/@comment-8780963-20191013013135

In Tomodachi Life, even a baby boy can have lips as well as eyes with eyelashes and makeup. Also, baby girls can have a boyish face too. Even for a daughter of a short-haired Mii set to female and the player chooses to keep that baby's appearance, that baby girl will more than likely have their own gender's hairstyles when fully grown.

For baby girls in Tomodachi Life born bald, they can also have Asami's hairstyle by chance when they are toddlers.