What: Prada Classic Square Sunglasses, $245
Why: This weekend was spent helping my friend shop for the perfect pair of sunglasses. She had left her old pair – which she had purchased on the street 3 years ago – in the back of a cab and was convinced she would never again find shades that looked good for every occasion. Until we came across Prada's classic squares. At first she was hesitant about the exaggerated shape – and price – but after glancing in the mirror, we both realized these glasses would last season to season, from jeans to chic black dress.
Get Yours: net-a-porter.com
Don't want to drop significant cash on something you could misplace as easily as your keys? (I know I have.) Fake it til you make it with Fossil's Margot glasses in Tortoise ($44).
Shop our Celeb Sunglasses Guide to see what the stars are spending their riches on these days.