Where did the time go?

So I realize my kids are getting bigger each day - I know my babies are turning four in less than a week- But I still call them babies.
It hit me hard yesterday when I walked outside and saw Callie on her bike without training wheels. I think that was the last thing I was expecting to see. She looked so big riding that bike. WHAT happened to my babies?!?











I don't know whether to cheer or cry. At least Court wasn't that interested in learning and she is technically my baby (even if it is by only 2 minutes).