There are two official Juventus Stores in Turin:

• STADIUM MEGASTORE, at Allianz Stadium - Via Druento 153. It's huge. A "must visit" place for all the Juventus fans, located next to the Juventus Museum. Open every day from 10:30 to 19:00. Opening time can vary.
• TORINO CITY CENTER, Via Garibaldi 4/E. Located very closed to Piazza Castello, is much smaller compared to the megastore but good for some black and white shopping before going to the Stadium or leaving the city. Open every day from 10:30 to 19:00. Opening time can vary.