She's on a Roll

Ella first rolled over about a month ago, but we never actually saw her doing it. She would be on her tummy when we went in to her room in the morning, after putting her to bed on her back. She likes to sleep on her side, and will easily roll to her side in front of us, but never will roll all the way. This morning, I watched her roll from her back to her tummy, and then almost immediately after from her tummy to her back. I got another roll on video soon after. Here it is:

She now loves practicing her new trick while she's in her crib going down for a nap. She rolls from her back to her tummy, but has more trouble rolling to her back. She only wants to sleep on her back though, so she'll cry like crazy, like "who the heck put me on my tummy?! It's nap time, and I want to be on my back! Help!".