Well, he is a typical British singer who has been quite famous throughout Britain, and one of his features is that he wears sunglasses all the time,especially aviator sunglasses. In order to make himself appear more attractive and awesome, mysterious, etc. You should know that celebrities always wear sunglasses so as not be to recognized so easily. Intimacy issue.
Jeff Lynne has worn black sunglasses indoors and outside since the mid-1970s. However, I still cannot find any information about his sunglasses brands despite that I made a deep searching online. I asked some of my friends and they told me that few people know exactly brands of sunglasses he wears indeed. But after scanning pictures of him, I think that ray-ban aviators are most likely to be one of his sunglasses. And Jeff Lynne is shy and sunglasses can give him a feeling of safety and privacy onstage and in public. Wearing sunglasses also can help hide ages and make personal trademark, even avoid being saw his deep depress in eyes. . By the way, I heard that Jeff Lynne wears sunglasses all the time because of his slightly sunken eyes.
A lot of other stars like jeff lynne wearing the sunglasses often just for the cool looks. The sunglasses are regarded as the accessories now to improve the beauty or cool look for both women and men. They stand for the fashion trend now. A lot of people wear it often in summer to show the cool look to match with the clothing.