Teach her about kindness towards others, but also kindness towards yourself.
Don't you dare talk about how much you hate your body in front of your daughter, or talk
about your new diet. In fact, don't go on a diet in front of your daughter. Buy healthy
food. Cook healthy meals. But don't say, "I'm not eating carbs right now." Your daughter
should never think that carbs are evil, because shame over what you eat only leads to
shame about yourself.
I am mortified to write this personal account, but I do feel socially obligated to share this experience, as it will help in raising awareness of size shaming/teasing/bullying and how it can easily and almost innocently start at a young age. What seems like petty pestering can lead to unfortunate circumstances. What surprised me was this was happening at such a young age and my own child was involved.