Here's my list of today's top four strangest celebrity diets. #1 - MY FAVOURITE! Christina Aguilera does the seven-day colour diet, eating food of a different colour every day for a week. Day one is white, but that means white fruit and vegetables, not white bread or white rice! This is followed by red, green, orange, purple, yellow and on the seventh day, all of the colours. This diet might encourage you to try new things, like ripe avocado and you'd get plenty of vitamins. I think this is the only one I would actually try. #2 Katy Perry keeps in shape with the mushroom diet, but instead of enjoying a bowl of delicious mushroom soup, she swaps one meal a day with raw mushrooms for fourteen days at a time. #3 Gwyneth Paltrow, Jennifer Aniston and Reese Witherspoon choose the baby food diet which involves eating fourteen jars of baby food a day, and one low-calorie meal of lean meat or fish and green salad. #4 Once, when Beyoncé was preparing for a video shoot, she went on a detox. This involved living on lemon juice, sweetened with maple syrup and made a little less bland with cayenne pepper.