6 months. 6 months with help, 9 months without help, most of the time.
6-8 months. Normal babies can sit up around 6-8 months of age.
6 months. Babies generally sit up around 6 months, however there is a wide range of normal. The first step is a tripod sit, where the baby supports his/herself with their arms o the floor in front of them.
7 months. Most babies are able to sit on their own at 7 months, and are able to get themselves from lying to sitting by 10 months. If you have any concerns regarding your child's development, please consult your pediatrician.
6-7 months. She will be able to sit by herself at 6-7 months, but she may not be able to get herself to a sitting position until 9-11 months.