This store is not in San Jose, but in Sunnyvale.
I am not sure if you want to buy or rent, but if renting is an option, check out Debbie Lyn’s Costume on El Camino. Tons of great disco gear. Lots of fun vintage stuff too. The only thing I don’t like about it is that the prices run kinda high (to both rent and purchase) and the sizes are all big. But definately
Hours of operation
Monday-Friday 11:00am-6:00pm Saturday 10:00am-6:00pm Extended Hours In October