For five decades plus five years Playboy has been the planet's foremost authority on beautiful women. To become our 55th Anniversary Playmate, our selection would have to not only continue that tradition but set a standard that could be upheld for 55 years to come. To locate that extraordinary beauty, our scouts scoured the United States and Europe. We test-shot dozens of stunning models (see last month's Hunt for the 55th Anniversary Playmate), narrowing down the field. Now, as you see our pick here (