Age-rating based more on interest than mature content
My 8yo daughter loved this movie because she loved the message. There were some slow parts in the movie (from a child's perspective) where she asked what was happening, and I had to pause the movie so we could have a discussion about Willow's feelings and why she reacted the way she did. She had no prior knowledge of Dolly Parton or pageants, so it was hard for her to understand quite what was happening at the start. But as the story unfolded, she got into it. Sexual content is very mild (a kiss), and there is a scene where Willow knees a boy in the groin after he harasses a girl for being fat. The subject matter of the film is fat-shaming, so your child has to be old enough that they can understand that where this is presented, it is being critiqued, rather than to take it at face value. It's fine fare for kids in upper primary / middle school, but the upper primary kids would definitely benefit from an adult there to help interpret the story. While there are some stereotypes, they are treated fondly and with empathy. One of the strengths of the movie is the extent to which it is about the relationships between women, in situations where women feel they are being judged and ranked based on how they look. There is zero catty competition, but there are misunderstandings, thoughtlessness, and low self-esteem. There is an overall theme of navigating a path through that minefield and ultimately of women supporting each other.