Are any other babes not sitting up yet? Eloise STILL isn't! DD#1 was sitting up quite well at 5 months and now at almost 6 months DD#2 is no where near. We sit her up and she immediately topples over. Her legs are so strong, we can stad her up next to things and she can hold on, but no sitting. Oh, she can also be lying on her back and pick her head up to look around, so you know she's got strong muscles! Sigh. Maybe she just doesn't want to?