I'm not a baby!

We went to the park today and there were only two "big girl/boy" swings. Spencer and Melanie were on those and Chelsea was very upset. She really wanted to swing so I put her in the "baby" swing. While she was swinging she was also singing at the top of her lungs, I am NOT A BABY, I am NOT A BABY! Sad, she already cares what other people think!