Who's diaper is this??

This evening my step dad watched Payton while me and my mom went on a walk. When I came back he had gotten her ready for bed. She was wearing one of the little gowns, so of course when you are holding her it rises up and you can see her diaper/legs. My mom was holding her, I was sitting next to my mom, and I looked over and thought Payton's diaper looked different. It looked like it was sagging a lot, and I knew her diaper couldn't be that full yet since she had just been changed. I took a closer look and realized she was wearing one of Parker's diapers. I started laughing and asked Terry why he put Payton in Parker's diapers?? You see, we have two clear bags on the side of the chair in the living room, one is filled with size 4 diapers for Parker and the other is filled with size 1 diapers for Payton. Anyways, I thought this was really funny so I took a picture of the diaper actually on Payton, and then the two separate diapers so you can see the size difference. What is even more funny is that the diaper doesn't even look humongous on her.