That was my first thought after I looked at the pictures. It is 1977 all over again. We used to call those polyester shirts “sperm shirts. For real 1977 authenticity the shirt should have winged collars (B-52 collars) and worn unbutton halfway to the navel with lots of medallions. The shirt must retain the smell of cigarettes. Another accessory that must be worn is a pair of angel flight pants with a Hebrew National salami stuffed into the crotch. White leisure suits will be coming back soon.
We used to call them “Mr. Guido shirts”
NIK NIK Shirts.
http://www.dressthatman.com/cat-SHIR-disco.htm