The battle of the sexes returned to the runway with two of this season’s most studious eyewear trends. For the menswear-inspired geek chic look, pair your boy-fit trousers and button-up blazers with rounded lenses. It’s a nod the classics pour homme but made just for her. Designers Marc Jacobs and Sonia Rykiel completed their bookish looks with circular lenses, from light and translucent to bold and striking. But for the ultimate in ladylike 20/20 style, don a pair of retro-inspired cat eye frames that are sure to peak the interest of a few Mad Men. From the exaggerated specs crafted by Prada or the prim and proper pair from Marni, each will play with your inner sex kitten. Whether you plan to borrow it from the boys or dress like a lady, we think fresh specs win the battle for smart style this season.