Many people have addictions to eating whatever they want as long as there is a buffet of food prepared at either parties, or restaurants to make them gain so much weight to where they can't even fit in their clothes anymore. The name of this sin, is the exact same name of the succubus who gives it, Gluttony.
While some people tend to get oversized stomachs that could make it impossible to wear anything, the only things that Gluttony could make grow while she ate were her breasts, and butt. However, whoever had a major eating disorder are the only ones who have their stomachs inflate to the size where they couldn't even see their own feet, while at the same time enjoying the taste of meat, sugar, and anything filled with calories that would lead to the sin of Gluttony to stuff a stomach.