Hogwarts girls fill up their sweaters

MadisonHRW at deviantART colorized a delightful, single-panel Hogwarts breast expansion comic by CallMePo. It seems to involve Hermione and Ginny using magic to give each other huge boobs. It looks as if Ginny is in the lead by a cup size or two, but she’s graciously sharing the magic with Hermione, whose breasts are swelling as she watches in gleeful anticipation. I wonder how big they’ll get?

[h/t: Hogwart's Breast Expansion - Breast-Expansion.net]