Yup, my sister was 3 when she was stuttering as well....we had to tell her to just slow down, and she would be fine. I TOTALLY agree with the above poster! She will have this resolved soon. School will really help too, AND if she doesn't smooth out, you can have her take speech therapy in school. At this age, I would be really surprised at teasing for this as well. Don't worry though, she will most likely grow out of it!