Ease of movement is the most important factor when choosing sportswear for yoga. Some yoga practitioners prefer fitted tops and pants, while others feel self-conscious in these styles of women's sports clothes. But there is something for everyone, and just because certain styles are labeled “yoga clothes” doesn't mean that you can't wear any exercise clothing that you like. Fitted styles have the advantage of not bunching up when you're twisting and not falling over your face when you are bending forward. That said, if you feel more comfortable in a loose-fitting t-shirt and shorts for yoga, that's what you should wear. Just be sure to tuck your shirt into your shorts before going upside-down for a headstand or shoulder stand.