We can now shop the Poshmark Facebook popup store inside Macy’s. Poshmark has partnered its seller community with Facebook to showcase select brands at Macy’s. Poshmark will be hosting in-store events where you can get to know fellow Poshmark sellers, stylists and do some shopping. This week I stopped in to The Market @ Macy’s to see how a partnership like this could work. Macy’s Herald Square is one of my favorite shopping destinations in NYC, but I hadn’t visited in a while. I am also active on Poshmark to sell my fashion items. Poshmark is also how I interact with other fashionistas. I entered The Market At Macy’s and…