In her blog, Stroller in the City, Brianne Manz gives readers a peek into her enviably stylish New York City life, which makes raising three kids in Manhattan look like a breeze. During a recent trip to The Shops at Columbus Circle, Brianne left the kids at home to enjoy some me time. Over a pit stop for coffee at Bouchon Bakery, she told us what it’s like to be the coolest mom on the block.