Paging Dr. Addison Montgomery! Private Practice actress Kate Walsh sizzles on the March issue of Shape magazine, in which she bares it all, and we mean all, for the fitness magazine. The 44 year-old actress looks not a day over 30 inside the pages of the magazine. When asked why she wanted to go nude for the cover, Kate said, “I’m enjoying my 40s and wanted to share that.” Is it a midlife crisis? “I do drive a Porsche, so maybe it is.” The inside pages reveal what she does to stay in shape, perhaps we can all take a page out of her life book to look this amazing at 44.