When you see Kylie Jenner, her superstar sibling Kendall, or Olivia Rodrigo enjoying a high-calorie treat, one question always daunts the mind – How do they not gain weight? A certified nutritionist reveals the truth behind viral social media posts of most “fit” and “thin” celebrities with junk food, so you aren’t easily fooled by anything and everything you see. Truth behind pictures of celebrities with junk food I wouldn’t lie there have been times I was tempted to eat a greasy burger or a creamy dessert after seeing Instagram posts of famous and fit celebrities enjoying any food normally co…