Sophia is rolling consistently now (as opposed to sometimes rolling but mostly crying during tummy time). She hasn't rolled from her back to her tummy yet, but she has been trying. Tonight when I was trying to take pictures of her rolling, she did it so often and fast that I had to hold her down until I got the camera ready. We're so proud of our little cutie!
Here she is modeling the stages of rolling for the camera:
A couple weeks ago she also started grabbing and exploring her hanging toys. It's so fun to see her learning new things.