Katie Hopkins: My Fat Story is a mammoth eat-off on Katie’s part. She’s got 13 weeks to get big and it’s not as easy as she’d planned. Thanks to her previously active lifestyle, Katie’s metabolism is faster than normal. To gain her target weight of 3 – 4 stone, she must consume way more than the average overeater - up to 6500 calories a day. Katie flies to America for inspiration and meets 52 stone Nikki who confronts her about her negative behaviour towards the obese. Here, she also takes on (and fails) a competitive eating challenge. Such is Katie's aversion to bingeing, she is ultimately forced to hire ex Marine, Christian, who places her on a strict, around-the-clock eating regime. As her expanding waistline finally begins to show, Katie reveals a hidden secret of her own, exposing a weakness that could be the real reason behind her fear of fat.