Any parent knows the struggle when their children don't get along, and it looks like Hilary Duff had that realization this week, when she read her eldest daughter's diary. Hilary is mom to four ...

My Girl:' Kelly Ripa, Hilary Duff and 12 Other Celeb Parents Who Sweetly Celebrated National Daughter's Day Haylie Duff Opens Up About Having a Nanny for Her Two Daughters: 'My Job Doesn't Stop ...