The mystery of Mimi's sizes

Long time ago I watched Duel Masters, and I noticed that there was something wrong with Mimi's breasts. Now I have a proof :] Mimi Tasogare is still just a kid but sometimes very busty kid.
Sorry for the quality, It was very hard to get it...

Seems small?

There too...

Even there.

But here...

...seems bigger...

...a lot bigger! Omg, but what's this?