Eternity by Calvin Klein turns 25 next year and on the eve of its century anniversary, Eternity Summer 2012 launches worldwide ($58, 3.4oz). This warm, feminine perfume conjures up images of summer night walks with a balmy breeze carrying the scent of neighborhood flowers to you. The fragrance notes include pear martini, bergamot, orange blossom, white peony, blue hyacinth, gardenia, Tonka bean, heliotrope, and white musk with the dominant notes being orange blossom and white musk. Eternity Summer 2012 has four to five hours of staying power before you need to reapply. It is a beautiful, feminine perfume that will take you from the office to a romantic dinner to a nighttime walk on the beach, and after that…