Recently I’ve purchased Freeks squeele: Kim Traüma, the latest comic-book by F. Maudoux.
Besides the marvelous artwork and the bizarre plot, it is worth mentioning here because Monsieur Maudoux has introduced many WG/BBW scenes. It's the best example I've ever seen of subtly introducing fat fetishism themes in a comic intended for the general public.
As far as I could understand using my poor French, the eponymous character Kim is a small girl that gets super powers ( namely flying and magical tatooing) by eating a burger (!) with the convenient side-effects of her body swelling as she gained 100 pounds. For reasons only we can understand, each transformation includes good views of her underwear ( wich seems to be made of the same elastic fabric as Bruce Banner pants). After using her powers she gets exhausted and shrinks to a emaciated figure due to the ‘loss of energy’.
Here goes her first transformation. It doesn't mind if you don't understand French because it doesn't make much sense anyway.