The first 2 weeks after a tummy tuck is so very important to getting a good result. You basically need to be at home in a stress free environment and allow your body to recover properly so that you can get back to your everyday life as soon as possible. Patients who typically try to "rush" their recovery end up just prolonging it because the body heals at a certain pace. I would recommend that you plan to wear comfortable and loose clothing for 2-3 weeks after a tummy tuck. But watch out! When you put on your attractive clothes at the end of this period, you are going to look great and fit your clothes great!
Most patients can wear their clothing after about 3 to 4 weeks. Swelling takes several months to completely go away. Keep in mind every patient is different.