Playmate: Ashley Mattingly

Playmate: Ashley MattinglyStrength and Beauty Break a sweat with Miss MarchBREAK A SWEAT WITH MISS MARCHI'm really good at having fun!" says 24-year-old Ashley Mattingly. Evidence of her carefree spirit: She revels in traveling on annual "girls' trips" to such locales as Monaco and Greece ("I've been to Santorini, Mykonos and Athens—amazing"). She throws dinner parties ("I love to entertain with wine, food and flowers") and she kayaks off the coast of Malibu,...