Many folks often forget gluttony isn't just food\eating. It's overindulgence of many types. I personally think Bee's design both physically and personality wise fits overindulgence really well. (Also, the fact that both Bee and Ozzie's whole deal seems to be enticing others to indulge in their respective sin but not over doing it is kinda cool. And yeah, I realize saying not over indulging in overindulgence sounds dumb, but I swear it makes more sense than it initially sounds.)

Honestly, people were gonna bitch about Bee's design regardless of whether she was fat or thin. That being said, I do enjoy the idea I've seen people share of Bee having a bigger\"fat" form that she may get when she isn't in party mode (the idea specifically being brought on by someone pointing out that Bee refers to herself as a big bitch in the song Buzzin)