A striking blue-eyed blond deftly navigates Los Angeles’ Melrose Avenue in her blue convertible Beetle. Her name is Amy Karn, and she could be any 26-year-old girl headed to Friday after-work drinks with the top up, windows down and her hair blowing in the breeze. Perma-glued to her cell, she’s usually talking to Valerie Reynolds, her best friend. This time Valerie’s calling to ask: Did Amy bring the halter bra she needs to borrow? Check. “We share everything,” says Amy. “I don’t know where I’d be without her.” Every woman needs close friends to lean on, but for Amy, this has never been truer. Over the past two-plus years, between settling into her first “grown-up” apartment, getting her career off the ground and trying to find love, Amy has made one mind-blowing transition her friends have not: She’s changed from a man into a woman.