What the subject title says, really. DD is 6 months old and more or less refuses to bend in the middle. She loves to 'stand' and bounce with someone holding on to her, has been rolling over for weeks and has just started to support her weight on her hands and knees. But she cries when we try to sit her down (e.g. for stories).
Please send me lots of replies about how your baby was exactly like that and then suddenly sat beautifully at the age of six months and one week !