Sitting By Herself

Three days ago, my youngest daughter suddenly was able to sit by herself from crawling position. She will be 7 months old next week, so she is right on schedule.

From what I read, by 7 months a baby is probably be able to sit unsupported (which will free his hands for exploring), and he/she'll learn how to pivot to reach a desired object while sitting. At this point he/she may even be able to get from his tummy into a sitting position by pushing up on his arms. By the time he's 8 months old, he'll likely be sitting well without support.