There's a range, but most are able to sit up (if you put them there) at 4 to 6 months.
When they can sit up on their own.
Babies develop at their own rate, but yes, a 4 month old may be able to sit with support. My 4.5 month old has learned to sit for short periods of time without support. I don't find this answer to be credible. Most babies do not sit on their own until 6-7 months of age. My son held his own neck up at only 2 days old and sat up on a boppy at 3 months old for 10 to 20 seconds at a time, but they fall left or right. At six months they learn to hold their toes or an object between their legs which keeps them balanced. Every baby does things at their own rate but a four month sitting up all by themselves is quite unbelievable.
Some babies sit up by 6 months. Apparently, however, not sitting up by 9 months isn't a big deal either. See the Related Link to a video regarding a baby's milestones - sitting included.
There are many 3 month old babies that can sit with support. You do need to make sure the baby can hold their head up.
When they see something and they think....what the...
They grow up and have their own babies, unless they die. Then they can't have babies.
Yes up to age two. The child must sit in your lap.
between 6-8 mmonths
they are born mid june and are old enough to be on their own
In some states, it is illegal for anyone to sit in the back of a pick-up.
Because the food in their tummy doesn't sit too well sometimes.
Any age realy but not 200 or above.