If you wish to make a slimmer body and smaller tummies, try doing an exercise that can help your abdominal gain muscle, and fit right in the clothes you want to wear. You can shape up easily with great cardio workout that will make your heart pumping and always on the go.
You may also try a simple 5 to 10k run, its not bad to try this. You may appreciate getting wet on swimming and do the strokes and get the benefit at the pool. Biking is also a good way to have a better body, you can pedal to success. You can also try dancing and turn the beat around and jive to the tune and swing your body and do the moves that will make your body shape up.
And the common one is go to the gym and have the exercise plan and sweat out, you should make a record of your progress or plan to which part of your body should have the most attention or need to maintain.