Juju, how did you get upstairs?
Ah, I think this is how she got upstairs:
Now, she's made us a bit more wary about whether baby can fit through those side banister bars. Probably. We haven't done anything with that area, and we're probably not going to, but I'm a bit more cautious in watching him when he's by that area. Thanks Juju, for showing us our baby proofing oversight!