want to look like jennifer aniston or reese witherspoon well guess what your wish has been granted for some of the diet secrets of the stars have been revealedjennifer aniston who is known for her super flat tummy follows the rhubarb smoothie diet which includes drinking a smoothie after every meal also the bruce almighty actress has cut down on her carbohydrates intake it has been claimed that drinking a mixture of the blended fruit with guava and crushed ice helps to speed metabolism however nutrition expert amanda ursell is at a variance with claims there is absolutely no research to support the idea that rhubarb assists the metabolism in any way the sun quoted amanda ursell as saying but the real deal here is not the rhubarb she is eating fewer calories through cutting down on carbs this explains her flat tummy too she addedon the other hand popstar mariah carey who says she invented the morsel diet revealed that she eats a tiny bit of everything when im really really hungry ill say i need a morsel so theyll give just me whatever is there on the plate but it has to be less than a forkful she stunner said while amanda has different take on that even if she did literally have anything she wanted this diet would work because the portion sizes are so tiny but i would be seriously concerned about her vitamin and mineral intake from this small amount of food amanda said this is not recommended she addedhollywood actress reese witherspoon follows the baby food diet wherein she eats tiny portion of foodbut this diet is so restrictive not to mention impractical the likelihood is that you wouldnt stick to it amanda said