Los Angeles: Katy Perry is a demanding pop star. She made a long list of backstage demands of food and dressing room requirements for her New Year's Eve concert in Vegas.Tmz.com reports that Perry wanted fresh veggies at all times - including spinach, broccoli, celery, beets, carrots, kale, etc. She also asked for two large baskets of fruits -- one must be tropical, and as far as dinner was concerned it must include a vegetarian option, plus quinoa or couscous.Further the 29-year-old demanded that all the meals must be low-fat and health conscious.Her dressing room requirements are even more specific:- Fresh organic grown fruit (including sliced pineapple, mango, kiwis, etc)- Fresh cut crudites (cucumber, broccoli, cauliflower, carrots, snap peas and celery...plus ranch dip)- Healthy granola- Dried figs- Whole grain tortilla chips- Large bowl hummus- Fresh made guacamole