My 2 are day and night. Same parents, both girls, oldest, brown hair, brown eyes, dark skin, the youngest, blonde hair, blue eyes and fair skin. Totally different personalitys. My oldest was always easy going and very well behaved. My youngest is not at all a bad child just very stubborn and head strong. Not to mention ADD. She has taught me to pick my battles with her. The oldest is always saying you would never have let me get away with that. I could tell her to stop one time and she would- not my baby. LOL I think alot of their differences is because they are 13 yrs. apart. They