Everyone loves a good makeover, and Sharon Stone is no different. When she arrived for her Shape cover shoot, she was dressed casually in a long gray sweater, ankle-length charcoal pants, and comfy flats. Makeup-free with her cute new bob tucked neatly behind her ears, she looked more like a chic mom than the Hollywood icon that we expected. A mere two hours later, however, the 56-year-old actress emerged in a black fringe bikini, sky-high heels, bombshell hair, and voilà! A screen queen was created. Even Sharon was impressed with her transformation. “It’s fun to play dress up and be turned into a movie star,” she says. “Whenever I invite my girlfriends to a premiere or big party, they get all excited and say, ‘Oh, yay, we get to go…