The jacket was sewn up in a pale plaid, with the pants in a lovely sort of a salmon pink.
I think it's corduroy - I HOPE it's corduroy:
Again, I love seeing that; I just think it's cool:
In the next two photos from Seventeen Magazine, they made the jacket with sleeves of crushed velvet, and the rest in denim, along with matching pants in the same cotton denim:
You know, back in 1973, you could buy fabric at LOTS of places!