When exactly did this happen?

Look how TALL these kids are getting!
OK, so Wes is on a stool in that picture, but still ~~

and who put that fireplace hearth basket up on top of that cabinet? It doesn't go there. Oh, and Carly is kneeling, so you can't see how tall she is in this picture ~~ but you can here. Right by Jacob, who is almost as tall as the tree (no stool needed).

Even the babies are growing up.