On Wednesday night, fashion designer Laura Kim invited her nearest and dearest over to her Lower East Side apartment for her version of a Lunar New Year celebration. There were a few deviations from ancient traditions—Kim’s dinner, which she prepared herself, came with custom cocktails incorporating cognac from Maison Martell and a guest list that combined over 4 million Instagram followers. Kim, wearing a fuzzy pink sweater and studded jeans, was joined by Fernando García, her design partner at Monse and, until recently, Oscar de la Renta, influencer and restaurateur Ezra J. William, Max Mara’s SVP of marketing and communications Judgie Graham, Felicia Quaning, and socialite and model Nicky Hilton Rothschild. They all took off their fashionable shoes and put on slippers that Kim laid out in her entryway as they entered her home. García and Kim with the mah-jong dessert from Empire Cakes. Lauren Cowart Rothschild recently relocated to London with her husband and three children, but she was back in town for a slew of New York Fashion Week commitments. She was traveling …