Gorgeous Vintage activewear 1980s fabulous periwinkle matching Active set NWT

Bay Club Active beautiful light bluish similar to periwinkle matching top and bottom. Both pieces are NWT. Shirt is marked a medium and bottoms a 10. The bottoms are unstretched 13" across and the rise is 12" approximately. The pants are drawstring. This aligns the top similar sizing to the bottom of a medium. Made in the USA. 1980s set straight out of a 1980s photoshoot or movie. Thinking of the Heathers. Please view photos as they are part of the description. In some of the white on the back of collar ( where the neck would be) I see a very faint yellow mark hard to notice. I have not washed this because it has tags but based on the very faintness of it I believe it would come right out in the wash.