Before spring blooms beckon us outdoors, prep for the new season with three titles on fashion and beauty.Photographer Kevin Davies paints a portrait of a fanciful milliner, fashion historian Elyssa Dimant analyzes the to-dos of women famous for their signature style, and the editors of Good Housekeeping offer ground rules about aging well.Philip Treacy by Kevin DaviesTop fashion designers such as Sarah Burton for Alexander McQueen have tapped the singular creations of British hat maker Philip Treacy, for whom greenhouses filled with exotic tropical plants are inspiration.He's likely on speed dial for the Duchess of Cambridge and other royal family members' custom-made fascinators. In Philip Treacy by Kevin Davies (Phaidon, $60), the author accompanies the almost 200 photographs with anecdotes about this mad hatter's imagination and complex craftsmanship.7 Years Younger: The Revolutionary 7-Week Anti-Aging PlanFrom the editors of Good Housekeeping, 7 Years Younger: The Revolutionary 7-Week Anti-Aging Plan ($26) is chock-a-block with tips for improving skin texture, nutrition and state of mind.Some suggestions are familiar, but the impact of too much sugar in your diet and the ill effects of sitting more than six hours per day bear repeating.And the book is full of good ideas that may be new to you.Consider this: Okinawans leave the table when they're 80 percent full.The Style MentorsIn The Style Mentors (Harper Design, $30), Elyssa Dimant dissects the dress of trendsetters past and present, including Marie Antoinette and Diana Vreeland.Particularly helpful is the way she points out ways readers can incorporate elements of their spirit and/or looks into theirs. Audrey Hepburn your fashion heartthrob? Go for little black dresses, capris and ballet flats. Prefer rocker Alison Mosshart of the Kills? Pair ripped jeans with gold designer boots. Study up.