Not sure about the chipmunks, but I took my dd to Princess and the Frog this weekend, and I think they would love that. It was not over-the-top princessy or girly, and it was a very fun and interesting movie. My dd was up dancing during the parts where there was music!
DS LOVES the first alvin and the chipmunks movie, we are taking him to see the "squeakal" next weekend, he turned 3 in october. This will be the first time taking him to the movies, but I think he'll be fine. I think it's entertaining enough to keep his attention with the music and all. I say Yaya
Re: alvin and the chipmunks appropriate for 3 yr. old neice and 4 yr old ds??