I have a 4 month old baby?!

I'm sure every  new mom asks herself this question pretty much every time their child hits a new milestone, but is my little baby really 4 months old already? How did this happen? How did the little peanut that lived inside my body, wedged up in my ribs, kicking me like crazy from the inside for 9 months grow so fast? This child has already pretty much doubled her birth weight, and is now 5 inches longer than she was when she was born. She's in the 87th percentile for weight, and the 90th for height. I'm not ready for this! At every new stage, I think to myself, "I want her to stay EXACTLY like this". And then she goes and does something new and adorable and the cycle starts again. Here are a couple of photos from today; she really is the cutest!