What's Wrong With This Picture?

This is how I found Eliza when I went to get her out of her crib the other morning. Can you tell what's wrong? I don't usually put my baby to sleep naked! She had wiggled her way out of her nightgown until it was down around her thighs! (That's the nightgown, the blue thing that looks like it's around her waist, it's actually down around her thighs.) What a clever little girl! It's definitely time to modify her sleep arrangement. I'm thinking a zippered sleep sack rather than the traditional blanket swaddle. (And can you see that we're still using a hospital blanket to swaddle her?)