Rollover!

So Katherine was lying on the floor next to my deskchair, on her back, and I was finishing up work stuff with my right hand while jingling a toy with my left so as to avoid having Katherine scream from lack of attention.

Jennifer then comes in and says "wow - did she do that?" I look down and see that Katherine is on her elbows.

So we've not yet seen her do it, and she's never shown any evidence of being able to roll onto her back, but we're going to now have to consider her mobile.

Update: Jennifer (jmartin2) has a picture.