When I think of Ariana Grande, I think of a hip, young chic, whose fit, peppy . competitions and runs marathons Check our weight loss plans. So i recently look at a bunch of celeb thinspo and saw that miley and cyrus and ariana grande lost alot of there weight from going gluten free. Now the singer has opening up about some of her weight loss secrets. According to an article published on the Hollywood Life, Ariana Grande.