Fashion plate and party boy Harry Brant is making his way into the family business. The decadence-loving offspring of billionaire Peter Brant and supermodel Stephanie Seymour will have his own column in his dad’s Interview magazine, which debuts in the December-January issue. “The Look” will cover beauty, culture and style, with 17-year-old Harry chatting up someone who epitomizes a particular look. In the debut, he’ll talk to artist Elizabeth Peyton about the style of Marie Antoinette.