At 4 months old, she is 27.5inches (100th percentile) and 17.5 lbs (99.5th percentile), which makes her about the size of an average 9-10 month old
She learned how to roll from her back to her front (she learned from her front to her back around 1 month), and we can barely keep her on her back. She immediately rolls over onto her belly when we put her down. I think she likes having a better vantage point to see what is going on.
She's also already starting to scoot a little and get frustrated when she cant reach things she wants. I can't help but think we might have an early crawler on our hands
And she finds nothing more fun than playing with her daddy.
She also learned that those stickers I put on her for her monthly photos are removable....