This pattern can be found free online at https://www.jessieathome.com/scarlet-poncho/

Scarlet is a striking and easy poncho made in banana silk yarn. There is a small amount of shaping at the shoulders to help it lay nicely. Due to the weight of the banana silk, there will be little to no blocking necessary, which is always a nice little bonus! The weight of the yarn also causes the poncho to lay very nicely.