The St. Regis from Starwood Hotels & Resorts is asking mobile users to use Instragram to share what they would put in a Grand Tourista Bag designed by Jason Wu. A winner will be selected, and the prize will be a vacation package and the bag. "This contest proved the perfect way to debut our Instagram channel and engage with travelers who were already posting stunning photography from our hotels and resorts," said Daphne Selzer, global brand director at St. Regis Hotels & Resorts.