The A List: Shades

BEVERLY HILLS Debra Messing wore Michael Kors' sunglasses with brown gradient lenses and gold detail ($225) to his fall show

SAN DIEGO The Ray-Ban Aviator ($109), created for World War II pilots, can still be spotted on California's "top guns"

HONOLULU Oakley's Polarized Gascan eyewear ($180) features plutonite lens material that provides 100% UV filtering in the hot Hawaiian sun

ASPEN Révo shades ($199) have multilayered lenses to ensure maximum protection from sunlight on the slopes

LAS VEGAS Pink Cartier Pasha shades ($495) are on the money at the boutique in the Wynn resort

MEXICO CITY Yves Saint Laurent's trendy shades ($240) are perfect for browsing the popular Polanco neighborhood

BUENOS AIRES Both locals and tourists can find these Armani tortoiseshell frames ($230) in the artistic Puerto Madero district

MONTREAL Dior's oversize Glossy sunglasses ($230) are a favorite of paparazzi-shy celebs like Lindsay Lohan

NEW YORK CITY Ashley Olsen recently picked up a pair of Calvin Klein tortoise-green bold plastic optics ($200) at the Madison Avenue shop

MIAMI Collapsible Diesels ($130) are among the top-selling eyewear at the Solstice Sunglass Boutique on Lincoln Road

PARIS French women looking for modern elegance turn to Chanel's sophisticated interpretation of the aviator ($335)

GENEVA Swiss resident Alain Vuarnet, son of Olympic skier Jean Vuarnet, could vouch for the brand's popular Skilynx mineral lenses ($140)

MADRID Gucci's studded eyewear ($275) is a hit among señoritas at Spanish boutiques Trendy and Zelai

LISBON Strollers on this city's Avenida de Roma love the durability of Persol for Max & Co. lenses ($159)

ROME Bulgari's Flora wrap-arounds ($649) with Swarovski flowers have gradient lenses for Mediterranean rays

MILAN Italians opt for Dolce & Gabbana's light metal model ($265) with detail hinting at hoop earrings

DUBAI Shoppers can't get enough of Prada lenses ($230) at Sunglass Hut in Wafi City mall

TOKYO The Oliver Peoples by Larry Leight Cameo ($340) lend a shade of Hollywood style to Japan's fashionistas

SHANGHAI These classic Ralph Lauren aviators ($220) fly off the shelves at Maochang Main Shop

HONG KONG Pop star Joey Yung dons these Swarovksi crystal--studded Coach April shades ($168)

SYDNEY Tommy Hilfiger's sunglasses ($70) boast a unique color-fade effect in the face of the bright Australian sun