Why we love them: Round sunglasses have that awesome retro-cool aesthetic that we crave — just the way Rachel Zoe added a pair of Cutler and Gross frames to perk up her look. They're totally on-trend and there are more than a few iterations to zero in on the look. How to wear them: These frames have subtle personality that translate easily from day to day, occasion to occasion. They may feel most at home with a pair of vintage-feeling flares, but don't underestimate how fresh they'll feel with a fresh pair of pastel jeans and a crisp white blouse. Keep your frames smaller if you're timid about the trend, or look for styles that are flat on top and rounded on the bottom to channel the look without making a big commitment. Elizabeth and James Metal Accented Round Plastic Sunglasses ($185)
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