Let's play: 'What's that dress!' Help a bigger girl out!

So, Closet Child's naming system strikes again. I've found a very cute dress; a modestly sweet pink AP number with full back shirring, and combing through lolibrary yeilded nothing as to its full measurements. I want to know how far the shirring can stretch, as Closet Child only listed the flat, unstretched measurements. This time, however, I've come prepared! I brought photos with!


Does anyone happen to own this Angelic Pretty dress, or know its name?