A PENCHANT FOR PENS: A self-proclaimed “paper freak,” Karl Lagerfeld also has a penchant for pens. It’s why he created a line of writing instruments and lighters for S.T. Dupont, which he feted Wednesday night in his 7L bookshop and photo studio in Paris. “I wanted a fountain pen in a certain way,” he said, adding he collects pens and has so many “I cannot count.” S.T. Dupont, the company considers the project with Lagerfeld long-term, and the project could be expanded in the future. “He has many ideas,” said Alain Crevet, president of S.T. Dupont’s management board, of the designer.