My 13 yr old is friends with almost everyone, as long as they are not juvenile delinquents. She is automatically accepted into whatever crowd she feels like hanging around with at any given time. Do your children make themselves approachable? Everyone knows who she is, and she even has one girl who tries to copy everything she does, and everything she wears, which really annoys her, but I told her that imitation is the sincerest form of flattery, so just deal with it since I guess this girl is very insecure.