PARIS—Saint Laurent closed Paris Fashion Week in dramatic fashion, with the Eiffel Tower glowing against the night sky and a vast black onyx stage polished to a mirror-like sheen. Designer Anthony ...

“I mean, that was just a few years ago,” Ortega says. “I’d done some shows and was working in film, but it wasn’t until that show, the day of the week [Wednesday], that just catapulted everything. As ...