don't think simply eating less will help...it can actually hurt. you still need the proper nutrition. whenever I skip a few meals in a day, I notice my abs and muscle definition overall look much worse and softer. but when I eat a nice balanced diet. a big dinner of chicken and brown rice, my abs will pop a lot more the next morning.
having great abs is all about sacrifice. NO fast food. NO junk food. NO un-natural sugars. I always felt a few hot cheetos a day is cool. maybe a few cokes a week. but ever since I went cold turkey on the junk food, my mid section looks much better. even though I stayed at the same weight, simply cutting out the junk food made a big difference.