Lachesis - I put a T-harness on my Panda like that and she wriggled out of it in no time and took off. I'm trying so hard to keep Panda confined to my Condo since the complex is trapping cats and sending them to the Animal Shelter. So I tried the harness and put her on a chain so she could be outside for a while and like I said, she wriggled out of it. I had it on tight too, so I thought.
Such a cute picture of your baby, she looks happy enough.