Beyonce and Jay Z went vegan for a while, Goopy Gwyneth Paltrow has been banging on about her "it's all good" diet for what feels like forever and we're all tempted to try our hand at those freaky fad diets which claim to deliver great results.
But just one look at this photo series from Italian photographer Dan Bannino is sure to change your mind.
We already kind of knew the lifestyles of the rich and the famous didn't exactly mean slap up meals and champagne every night of the week - how would they be pap-ready if they were scoffing duck a l'orange of a Wednesday evening? - but we didn't realise quite how extreme their eating habits could really be.
Honestly, Beyonce's cayenne pepper and lemon diet is almost laughable, especially when the photo depicting it comes complete with pretty pink toilet rolls.
Speaking to HuffPost UK Lifestyle, Dan said: "Everyone wants to know the secrets behind a celebrity and small details are the greatest. I've chosen these people because I thought they're easy to be recognised and somehow funny, they are so different from each other, but at the same time all of them have or had a weird eating habit.
"I've tried to capture the beauty that lies in this terrible constriction of diets and deprivation, giving them the importance of an old master's painting."
See our favourite pictures in the gallery below.
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