What do you like to wear when practicing Tai Chi? What should you wear to practice Tai Chi and Qigong? A simple answer is loose, comfortable clothes and flat shoes.
Wear loose, comfortable clothing and flat-soled shoes such as tennis shoes or slip-ons. It is not advisable to wear cross-trainers as they interfere with your balance. While Tai Chi can be performed with bare feet, we strongly recommend that you do not have bare feet in class due to the risk of injury. From a Chinese Medicine perspective, it is also considered unwise to get cold feet, so bare feet in Winter is not recommended even at home.
Clothing For Normal Practice 
Cotton is the best type of clothing to wear for everyday practice because it allows your skin to breath and absorbs sweat. Your clothes should be loose and comfortable. You can order it from Tunde. Available size: Small, Medium, Large, XLarge, XXLarge).
It is convenient to dress in layers because in winter, it can be cold but when you practice, you can work up a sweat. You might need to take some clothes off. In summer, you might get overheated. Again, you can remove a layer. But remember, if you are overheated. Avoid practicing in a windy area. And when you practice in a colder area, put on a light jacket. After your practice do not subject yourself to extreme change of temperature quickly, for example if you are hot and sweating, do not go to a very cool and windy place, cool down gradually.
While clothing such as leotards might allow your body to move freely, such clothing is not suitable for Tai Chi. In Tai Chi because mobilizing the Qi is an important goal. Qi travels along its meridians (energy channels), which are close to the surface of the skin, so clothing that stick tightly to the skin such as leotards hinders the flow of Qi. Also avoid tight elastic around your waist and legs because, again, this might restrict the flow of Qi.
Shoes
The ideal practice shoes should:
1. Feel very comfortable and flexible.
2. Be light, with thin sole.
3. Have broad base support in the sole to help you balance.
4. Have shock absorbent pads in the sole to minimize injury.
Lace-up shoes like the martial art shoes, for example Adidas or Prospect martial art shoes, can be suitable, although they are not designed for Tai Chi practice, and they don't offer good base support or shock absorbance. Shoes specifically designed for Tai Chi are needed.
Bare feet
Some people like to practice in bare feet. For others, it might be difficult. Shoes give you good support and enhance balance. Sometimes the ground might be uneven or dirty. Also, if your feet get cold, it could impede the flow of Qi. For people with diabetes, good shoes are essential because any injury to the foot can be very difficult to heal and might lead to serious infection.