Well, looks like you are quite interested in the type of sunglasses that 2 chainz wears. So, good choice as he is such as great singer. Anyway, the type of sunglasses he wears is called round sunglasses. They are becoming more and more popular and you could see many of those sunglasses at Walmart online store. Hope you get what you want.
It is the Vintage Jean Paul Gaultier 6016 sunglasses with round lenses that 2 chainz wears. The vintage style comes back to the popularity again which receive a lot of people's favors. If you like such type, you could go to the online store to have a look. You could also search this kind of sunglass from the real store of the eyeglasses.