Tonight we dropped by Derek's. While Charlotte was putting on her coat we put Anna on the floor and she seemed to sit. She was wearing a big snowsuit so I figured the shape of it was somehow keeping her upright. Later I decided to experiment in her pyjamas. First I tried sitting Charlotte behind her to catch her, but I soon worked out she could do it with no one nearby to catch and could do it for quite some time - up to a minute at a time. Fourteen weeks does seem a tad early to be sitting - I guess she hasn't got to the chapter in the baby book yet that tells her what to do when!