My dd is 6 months old. Apart from a few 'accidental' rolls from her tummy to her back, she hasn't rolled at all. She also shows no interest in rolling (she doesn't like being on her tummy). Developmentally she seems fine, and she can almost sit up without support (can manage about ten seconds without falling over). However I am a little concerned that she shows no interest in rolling. When did everyone elses babies roll? Thanks!