What Happened?

I sit here pondering what has happened to my kids. I found this picture. It's not the best picture but it really portrays the 3 of them and I remember having so much fun taking them through Storybook Land that day.
But I've looked all over my house and I don't know what happened. The kids in my house are much too big. They look like this...

And like this...
And like this...

How could there be a 2nd grader and a preschooler in my house? Along with another little boy who is old enough and smart enough to put together a 100 piece puzzle. They are such special kids and my time with them is so precious. Just wanted a little reminder!