Both of my little people adore babies. So when I told them we were keeping my one-year old niece Mia for the day yesterday, they were overjoyed. And they wore this sweet girl out! There was non-stop playing until nap times, and then Mia slept like a rock. Milo and Lucy wanted to wake Mia up from her afternoon nap, and it wasn't enough to just wake her... They needed to get into the playpen with her.