First Time Rolling Over

I swear I only looked away for a second. I put Keira on her tummy for some tummy time this evening and turned to grab a toy for her and the next thing I know, she rolled onto her back. I looked at her and asked her how she did it, but she only gave me the biggest grin ever. Smarty pants. I called Dave up to see if she'd do it again, but no go. She put a lot of effort into it though.