Catching a jet-setting fashion designer is no easy task, but gaining access is worthwhile—if not only to live vicariously through them. ViX designer Paula Hermanny is headed for tropical bliss in Costa Rica this Christmas.  As balmy weather and shimmering sands await her, she unzips a suitcase no bigger than a single dresser drawer and proceeds to pack.  Between business trips in San Diego and Rio de Janeiro, and visits to undeniably posh locales, Paula is more than accustomed to travel.  And with a penchant for beach destinations, she’s developed a method to packing and has mastered the ...