Hillary Duff’s Diet and Fitness Routine Her routine keeps her in tip top shape. Hillary best know for the Television Show “The Lizzie McGuire” is also a pop singer, songwriter and entrepreneur. So how did she drop weight in 2007? How does she maintain her slim healthy look? Keep Reading. Hillary Duff’s Diet Hilary Duff considers herself a big meat eater and avoids pasta, potatoes, and breads. Sticks to eating lots of small meals all day. She limits junk food, and eats treats in moderation. her diet is basically mini meals, low fat, and low carbohydrate. Her diet consists of greens, […]