Victoria's Secret model Adriana Lima reportedly followed a liquid-only diet for nine days before a fashion show. Twelve hours before heading to the podium, she abstains from all food and drink, in order to lose any water weight gained on the liquid diet. This type of diet is not recommended by health professionals, but celebrities can get away with it. this behavior when the job requires it.5. Start the day with a twist of lemonMany of us start the day with freshly squeezed orange juice. Actress Jennifer Aniston, however, firmly believes that a different type of citrus fruit is the way to go for weight loss. She starts each morning by drinking a large glass of freshly squeezed lemon juice. She claims that the tangy drink helps her body shed fat and allows her to maintain her slim figure.6. Cleansing Their Colons Before Filming A common practice in Hollywood is for celebrities to have a cleanse to remove excess weight and toxins from their colons before filming. Beyoncé reportedly used the Master Cleanse diet to help her lose weight for an upcoming film. The diet, which involves drinking water, cayenne pepper and maple syrup for 14 days, can help users look bigger.