By Roberta Naas Last night at a lavish event at The Duggal Greenhouse in Brooklyn, Piaget unveiled its all-new stainless steel Piaget Polo S watch line. Consisting of five models, the Piaget Polo S marks the first time the brand has introduced a stainless steel collection. The launch of the line also marks a new focus for Piaget: the Game Changer generation. Several factors make the