Jewelry designer and reality star of The Real Housewives of New York City Kelly Killoren Bensimon has an idea about fashion — after all, she once served as accessories editor at Elle magazine. The former model is also the author of many books, one of them being The Bikini Book ($35). With Summer on the horizon, this 400-page tribute to the bikini is the perfect way to get inspired. Go back in time and see what bikinis Hollywood pinups of the '50s, Bond girls, and Brigitte Bardot wore to look sexy. Also get visuals of the monokini, tankini, bandini, and v-kini. I know, v-kini? Intrigued?