It is always classic, stylish and chic. Look at Audrey Hepburn and Jackie O. Some people like these kinds of glasses while other people don't like. However it is still classic and it will forever.
Black big sunglasses are one of an classic sunglasses especially in some movies such as men in black. In our real life, there are still many people wear black sunglasses. But with the diverse of sunglasses, now, more and more people refer to wearing colored big sunglasses for match their outfit . Nevertheless, big black sunglasses won't be out of fashion. If you like it, just wear it.