Now she has been doing this for at least a couple weeks, sitting up! She has excellent control for just 4 months, doesn't she? We did have one face plant while I was trying to take the pics- don't worry we have heavy carpet padding :)
Our Sweet Pea is very interactive and social. If someone says hello to her while we are out... they get the huge happy smiles (like above) and lots of kicks and arm waves. So excited. She is such a joy.