Heather Lowenthal got her start in the stationery business in 2003; it was such a success that it paved the way for her launch of Posh Parties in 2006. The South Florida-based planner knows how to produce a one-of-a-kind event, and most recently put together OTM Bride Stephanie Hill’s elegant, intimate ceremony and OTM Bride Lindsay Hanau’s Vero Beach nuptials.