We found 1 Reddit comments about Real Vampires Have Curves (Glory St. Clair, Book 1). Here are the top ones, ranked by their Reddit score.
He doesn't know much vampire material.
Fat Vampire: An Underdog Vampire Novella - I've read it, it's not bad. It is however, realistic about fat vampires - in that he can't catch his prey because he's too fat. Also Real Vampires have Curves and another Fat Vampire.
Furthermore, fat vampires are in plenty of vampire movies/shows - Blade has Pearl, Balthazar and Kakistos in Buffy the Vampire Slayer, Cho in True Blood, a bunch of them in From Dusk till Dawn, Deacon in What We Do in the Shadows, the Head Vampire in Lost Boys and Santiago in Interview with the Vampire.