My baby girl is almost 9 months old and finally sitting up for extended periods of time unassisted. Man, oh man, I do not want her to be growing so fast! She adores sitting up on her own; I honestly swear she is proud of herself. She gets her little arms and legs a kicking, and starts doing her excited growl/yell and talking to us. Ugg, I want to eat this child up, I love her so. If she happens to tumble over, she'll sit and fuss until you prop her back up, where she will then start kicking and blabbing away again!