- Does the frame shape remind you of any specific insect? Generally oversized, butterfly frame sunglasses can vary in terms of details like temple width and height, even shape. The size of butterfly styles is also a functional advantage: It covers more of the face from the sun’s harmful rays and if you have an… ermm generously sized nose, butterflies can draw attention away. They also work great for those mornings after, when you just want to hide your face. Jackie O loved these back in the day.