Wear clothes that fit comfortably, you need to move a lot in them. No requirements for special yoga clothes, just wear something flexible. Remember, yoga is not about the appearance, but if these clothes make you feel good, go for it!
Only for yoga in a heated room, it’s recommended to wear a short pants + sports top (yogini’s) / or no top at all (yogi’s). During the practice, please take your shoes and socks off. Traditionally, yoga is practiced barefoot. Embrace your feet, they are amazing parts of your body. Show them some love and a bit of sunlight.