The aviator has moved well beyond sunglasses. In optical form, a fine metal aviator has a slightly intellectual, slightly retro quality that looks especially good against polished fall basics. The open construction keeps a larger lens from feeling heavy, while the double bridge gives the frame enough structure to register as a deliberate choice.
Silver looks sharp with gray, navy, black and cool denim. Gold softens camel, chocolate, cream and olive. If you mix metals in your wardrobe, do not overthink matching every earring and belt buckle to your frames. What matters more is whether the finish repeats the overall temperature of your clothes.
From a styling perspective, this is the frame I would use when an outfit needs tension. A feminine blouse becomes cooler. A sweatshirt and wool coat look considered instead of accidental. A simple black turtleneck takes on the attitude of the woman wearing it rather than reading as a blank base layer.
The fit is important because aviators naturally cover more of the face. Look for a bridge that sits securely without sliding and a lens width that does not extend dramatically past your temples. If the bottom of the frame rests on your cheeks when you smile, try a smaller scale or a style with adjustable nose pads.