Sister Dudu. Sister Dudu became famous because she acted ugly. She has 10.66 million Kuaishou fans. She became popular all over the Internet with her song "Dudu Mouth". However, netizens also praised her for her buck teeth and bulging appearance. Therefore, the Kuaishou star sang There will be a girl with buck teeth named Sister Dudu. Sister Dudu is one of them. Being banned for being too ugly is really shocking.