God, I was so on trend in 8th grade. Cat-eye sunglasses were my thing. In the years since, I've moved on to big glamour girl shades, Ray-Ban wayfarer knockoffs, and aviators a la Carrie on "Sex and the City," sure that my beloved cat-eyes would never make a comeback. But they have! Cat-eye shades are big for spring and summer -- here are 12 pairs all under $25!