That Fat Girl Is Your Stepmother

Jilted heiress marries mob boss, transforms, and destroys her betrayers.

Marina, a 400-pound heiress, is left at the altar by her fiancé Jack and stepsister Lily. Mafia don James proposes, then reveals her stepmother has been slowly poisoning her and murdered her father. Marina undergoes a radical physical overhaul, becoming stunning and ruthless. As James's wife, she systematically dismantles the conspirators and reclaims her family empire. When Jack later poisons James, Marina seizes the only antidote and saves him, though a swapped chip leaves the patriarch dead and a new crisis looming.

• revenge
• mafia
• transformation
• family

1. Jack and Lily abandon Marina at wedding
2. James exposes stepmother poison and father murder
3. Marina transforms physically and destroys conspirators

This story fits anyone drawn to a humiliated heiress who weaponizes a mob marriage and a total physical reinvention to annihilate the family that betrayed her.