Fashion history lovers, rejoice: on February 20th, Rizzoli will release "Dior Images: Paolo Roversi," a volume of photographs from publications including British Vogue, Vogue Paris, and W that spotlight creations by Dior's line of artistic directors Gianfranco Ferré, John Galliano, Raf Simons, and Maria Grazia Chiuri. The book celebrates the maison's 70th anniversary and features exclusive photographs by Paolo Roversi…