NILI’S NIGHT: Ahead of her upcoming 20th anniversary in business, Nili Lotan partnered with Saks for a celebratory dinner Thursday evening. Held at the fourth floor walk-up Jacqueline Sullivan Gallery, guests like Jacqueline Jablonski, Colin King, Alex Tieghi-Walker, Beverly Nguyen, DeVonn Francis, Anh Duong, Alexander Roth and Saks’ Roopal Patel and Tracy Margolies were treated to a special dinner by former Bon Appetit editor Andy…