>>42429>>42430Good reasons but I'd say the best way to come to a conclusion would be from choosing a particular lens in which you want to view this situation in. There are no wrong choices really if you look at it.
If Izzy was the biggest then the situation would be wacky silliness in it's purest form. The other two not being as overzealous about something as silly as belly sizes while Izzy shakes her belly around, fully embracing the fact she's the star of a fat pic.
With Courtney it would be pushing the envelope too far, making sure to declare that she's the one with the biggest belly. Pointing to herself and proudly positioning herself at the center in an attempt to declare herself victor in a nonsensical situation. Her competitive nature making her over embrace the fetish scenario.
With Gwen she'd be satisfied in being so weirdly huge that it almost shocks and horrifies the others. The situation going from silly and competitive to more shocking, embracing the stranger aspects that fat fetish drawings can hold.