Getting rid of belly fat is 80 percent based on an organized and healthy diet.
Exercises to pull in your tranverse abdominals (think of those as a corset around your core, the rectus abdominals are those which make a six pack) are planks (side and pushup position), isometric holds (think holding a pullup bar and pulling your legs up straight and holding for a few seconds at a time).
But focus on your diet to get rid of stubborn belly fat. Cardio will also help shed the excess fat.
Try walking on an incline for 20 mins, then build to jogging intervals for 20. Eventually push up to 30 mins. Try to jog for as long as possible, then rest for 1 minute. Intervals will really boost your fat burning ability.
Try reverse sit ups for below the belly button
I wish I knew!! :( seems so difficult!