I would like to know too. My 4 yo keeps asking if she is old enough to see this movie, and I said I don't know yet. She really likes Hillary Duff. Of course, she calls her Lizzie McGuire.
We saw the movie yesterday and my girls are 8 & 12. They both liked the movie. There are a few swear words in the movie and a couple innuendos and a few kisses (very basic). I think it would be ok for younger kids - most of it would go over their heads. The movie was mostly moms and girls ages 5 - 12. Good luck with your decision
Based on that movie review link I don't know if I want my 10 year old watching... I guess since they are at the theater it's too late... ugh! Should be interesting to hear her review.