Phoebe Philo’s decade at Céline, from 2008 to 2018, produced some of the most coveted fashion of the era. Her Céline was defined by intelligent minimalism, exceptional tailoring, and an instinct for proportions that were often deliberately off-kilter: oversized coats, exaggerated trousers, and sculptural shoes among them. Pieces from the period have since become highly collectible, inspiring a devoted resale market and the enduring shorthand “Old Céline.”