Chanelle Hayes has shown off her seven stone weight loss in new before and after photos after revealed she underwent a gastric sleeve operation.The 33 year old Big Brother star shared a before and after photo of her posing side-on with her arms held up to show off her progress in a new Instagram post. Chanelle’s pictures show her dressed in underwear, with her hair tied up to show the extent of her transformation, which she shared on Wednesday 5 May.