Curious George, baby sister

Last night at dinner Caleb was telling us that we needed a baby sister and a girl.  Not a baby sister that is a girl and not a girl thats a sister but one of each. We tried for a while to figure out exactly what he meant and then eventually gave up and said 'yeah we do need a baby sister and a girl'.  So a couple of hours later he comes out of his room with his Curious George and proclaims it to be his baby sister.  So of course we had to change her diaper and put on an actual diaper and then we borrowed some of Westons clothes to put on her as well.  This morning he came out with George and I said "how is your baby sister?" and he looked at me like I was clueless and said "he's a boy baby mom".  He went on to change George's diaper and put on clean clothes and even pretended to feed him.  This is a change of pace from his usual pretendings which include: spiderman, ninja, jedi, policeman, robber (he pronounces it wobber) or break dancer. He is working on getting his headstand perfected and can do some spin moves like break dancers do.